FastMath dist3

Percentage Accurate: 97.9% → 100.0%
Time: 2.4s
Alternatives: 6
Speedup: 2.0×

Specification

?
\[\begin{array}{l} \\ \left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32 \end{array} \]
(FPCore (d1 d2 d3)
 :precision binary64
 (+ (+ (* d1 d2) (* (+ d3 5.0) d1)) (* d1 32.0)))
double code(double d1, double d2, double d3) {
	return ((d1 * d2) + ((d3 + 5.0) * d1)) + (d1 * 32.0);
}
module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(d1, d2, d3)
use fmin_fmax_functions
    real(8), intent (in) :: d1
    real(8), intent (in) :: d2
    real(8), intent (in) :: d3
    code = ((d1 * d2) + ((d3 + 5.0d0) * d1)) + (d1 * 32.0d0)
end function
public static double code(double d1, double d2, double d3) {
	return ((d1 * d2) + ((d3 + 5.0) * d1)) + (d1 * 32.0);
}
def code(d1, d2, d3):
	return ((d1 * d2) + ((d3 + 5.0) * d1)) + (d1 * 32.0)
function code(d1, d2, d3)
	return Float64(Float64(Float64(d1 * d2) + Float64(Float64(d3 + 5.0) * d1)) + Float64(d1 * 32.0))
end
function tmp = code(d1, d2, d3)
	tmp = ((d1 * d2) + ((d3 + 5.0) * d1)) + (d1 * 32.0);
end
code[d1_, d2_, d3_] := N[(N[(N[(d1 * d2), $MachinePrecision] + N[(N[(d3 + 5.0), $MachinePrecision] * d1), $MachinePrecision]), $MachinePrecision] + N[(d1 * 32.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32
\end{array}

Local Percentage Accuracy vs ?

The average percentage accuracy by input value. Horizontal axis shows value of an input variable; the variable is choosen in the title. Vertical axis is accuracy; higher is better. Red represent the original program, while blue represents Herbie's suggestion. These can be toggled with buttons below the plot. The line is an average while dots represent individual samples.

Accuracy vs Speed?

Herbie found 6 alternatives:

AlternativeAccuracySpeedup
The accuracy (vertical axis) and speed (horizontal axis) of each alternatives. Up and to the right is better. The red square shows the initial program, and each blue circle shows an alternative.The line shows the best available speed-accuracy tradeoffs.

Initial Program: 97.9% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32 \end{array} \]
(FPCore (d1 d2 d3)
 :precision binary64
 (+ (+ (* d1 d2) (* (+ d3 5.0) d1)) (* d1 32.0)))
double code(double d1, double d2, double d3) {
	return ((d1 * d2) + ((d3 + 5.0) * d1)) + (d1 * 32.0);
}
module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(d1, d2, d3)
use fmin_fmax_functions
    real(8), intent (in) :: d1
    real(8), intent (in) :: d2
    real(8), intent (in) :: d3
    code = ((d1 * d2) + ((d3 + 5.0d0) * d1)) + (d1 * 32.0d0)
end function
public static double code(double d1, double d2, double d3) {
	return ((d1 * d2) + ((d3 + 5.0) * d1)) + (d1 * 32.0);
}
def code(d1, d2, d3):
	return ((d1 * d2) + ((d3 + 5.0) * d1)) + (d1 * 32.0)
function code(d1, d2, d3)
	return Float64(Float64(Float64(d1 * d2) + Float64(Float64(d3 + 5.0) * d1)) + Float64(d1 * 32.0))
end
function tmp = code(d1, d2, d3)
	tmp = ((d1 * d2) + ((d3 + 5.0) * d1)) + (d1 * 32.0);
end
code[d1_, d2_, d3_] := N[(N[(N[(d1 * d2), $MachinePrecision] + N[(N[(d3 + 5.0), $MachinePrecision] * d1), $MachinePrecision]), $MachinePrecision] + N[(d1 * 32.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32
\end{array}

Alternative 1: 100.0% accurate, 2.0× speedup?

\[\begin{array}{l} \\ \left(d2 - \left(-37 - d3\right)\right) \cdot d1 \end{array} \]
(FPCore (d1 d2 d3) :precision binary64 (* (- d2 (- -37.0 d3)) d1))
double code(double d1, double d2, double d3) {
	return (d2 - (-37.0 - d3)) * d1;
}
module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(d1, d2, d3)
use fmin_fmax_functions
    real(8), intent (in) :: d1
    real(8), intent (in) :: d2
    real(8), intent (in) :: d3
    code = (d2 - ((-37.0d0) - d3)) * d1
end function
public static double code(double d1, double d2, double d3) {
	return (d2 - (-37.0 - d3)) * d1;
}
def code(d1, d2, d3):
	return (d2 - (-37.0 - d3)) * d1
function code(d1, d2, d3)
	return Float64(Float64(d2 - Float64(-37.0 - d3)) * d1)
end
function tmp = code(d1, d2, d3)
	tmp = (d2 - (-37.0 - d3)) * d1;
end
code[d1_, d2_, d3_] := N[(N[(d2 - N[(-37.0 - d3), $MachinePrecision]), $MachinePrecision] * d1), $MachinePrecision]
\begin{array}{l}

\\
\left(d2 - \left(-37 - d3\right)\right) \cdot d1
\end{array}
Derivation
  1. Initial program 97.9%

    \[\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32 \]
  2. Step-by-step derivation
    1. lift-*.f64N/A

      \[\leadsto \left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + \color{blue}{d1 \cdot 32} \]
    2. lift-+.f64N/A

      \[\leadsto \color{blue}{\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32} \]
    3. lift-*.f64N/A

      \[\leadsto \left(\color{blue}{d1 \cdot d2} + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32 \]
    4. lift-+.f64N/A

      \[\leadsto \color{blue}{\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right)} + d1 \cdot 32 \]
    5. lift-*.f64N/A

      \[\leadsto \left(d1 \cdot d2 + \color{blue}{\left(d3 + 5\right) \cdot d1}\right) + d1 \cdot 32 \]
    6. lift-+.f64N/A

      \[\leadsto \left(d1 \cdot d2 + \color{blue}{\left(d3 + 5\right)} \cdot d1\right) + d1 \cdot 32 \]
    7. *-commutativeN/A

      \[\leadsto \left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + \color{blue}{32 \cdot d1} \]
    8. +-commutativeN/A

      \[\leadsto \color{blue}{32 \cdot d1 + \left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right)} \]
    9. +-commutativeN/A

      \[\leadsto 32 \cdot d1 + \color{blue}{\left(\left(d3 + 5\right) \cdot d1 + d1 \cdot d2\right)} \]
    10. *-commutativeN/A

      \[\leadsto 32 \cdot d1 + \left(\color{blue}{d1 \cdot \left(d3 + 5\right)} + d1 \cdot d2\right) \]
    11. +-commutativeN/A

      \[\leadsto 32 \cdot d1 + \left(d1 \cdot \color{blue}{\left(5 + d3\right)} + d1 \cdot d2\right) \]
    12. associate-+r+N/A

      \[\leadsto \color{blue}{\left(32 \cdot d1 + d1 \cdot \left(5 + d3\right)\right) + d1 \cdot d2} \]
    13. distribute-rgt-inN/A

      \[\leadsto \left(32 \cdot d1 + \color{blue}{\left(5 \cdot d1 + d3 \cdot d1\right)}\right) + d1 \cdot d2 \]
    14. *-commutativeN/A

      \[\leadsto \left(32 \cdot d1 + \left(5 \cdot d1 + \color{blue}{d1 \cdot d3}\right)\right) + d1 \cdot d2 \]
    15. associate-+r+N/A

      \[\leadsto \color{blue}{\left(\left(32 \cdot d1 + 5 \cdot d1\right) + d1 \cdot d3\right)} + d1 \cdot d2 \]
    16. +-commutativeN/A

      \[\leadsto \left(\color{blue}{\left(5 \cdot d1 + 32 \cdot d1\right)} + d1 \cdot d3\right) + d1 \cdot d2 \]
    17. associate-+r+N/A

      \[\leadsto \color{blue}{\left(5 \cdot d1 + 32 \cdot d1\right) + \left(d1 \cdot d3 + d1 \cdot d2\right)} \]
    18. +-commutativeN/A

      \[\leadsto \left(5 \cdot d1 + 32 \cdot d1\right) + \color{blue}{\left(d1 \cdot d2 + d1 \cdot d3\right)} \]
  3. Applied rewrites100.0%

    \[\leadsto \color{blue}{\left(\left(d3 + d2\right) + 37\right) \cdot d1} \]
  4. Step-by-step derivation
    1. lift-+.f64N/A

      \[\leadsto \left(\color{blue}{\left(d3 + d2\right)} + 37\right) \cdot d1 \]
    2. lift-+.f64N/A

      \[\leadsto \color{blue}{\left(\left(d3 + d2\right) + 37\right)} \cdot d1 \]
    3. metadata-evalN/A

      \[\leadsto \left(\left(d3 + d2\right) + \color{blue}{37 \cdot 1}\right) \cdot d1 \]
    4. fp-cancel-sign-sub-invN/A

      \[\leadsto \color{blue}{\left(\left(d3 + d2\right) - \left(\mathsf{neg}\left(37\right)\right) \cdot 1\right)} \cdot d1 \]
    5. metadata-evalN/A

      \[\leadsto \left(\left(d3 + d2\right) - \color{blue}{-37} \cdot 1\right) \cdot d1 \]
    6. metadata-evalN/A

      \[\leadsto \left(\left(d3 + d2\right) - \color{blue}{-37}\right) \cdot d1 \]
    7. lower--.f64N/A

      \[\leadsto \color{blue}{\left(\left(d3 + d2\right) - -37\right)} \cdot d1 \]
    8. +-commutativeN/A

      \[\leadsto \left(\color{blue}{\left(d2 + d3\right)} - -37\right) \cdot d1 \]
    9. lower-+.f64100.0

      \[\leadsto \left(\color{blue}{\left(d2 + d3\right)} - -37\right) \cdot d1 \]
  5. Applied rewrites100.0%

    \[\leadsto \color{blue}{\left(\left(d2 + d3\right) - -37\right) \cdot d1} \]
  6. Taylor expanded in d2 around inf

    \[\leadsto \color{blue}{d1 \cdot d2} \]
  7. Step-by-step derivation
    1. *-commutativeN/A

      \[\leadsto \color{blue}{d1} \cdot d2 \]
    2. metadata-evalN/A

      \[\leadsto d1 \cdot d2 \]
    3. fp-cancel-sub-sign-invN/A

      \[\leadsto d1 \cdot d2 \]
    4. +-commutativeN/A

      \[\leadsto d1 \cdot d2 \]
    5. metadata-evalN/A

      \[\leadsto d1 \cdot d2 \]
    6. metadata-evalN/A

      \[\leadsto d1 \cdot d2 \]
    7. associate-+l+N/A

      \[\leadsto d1 \cdot d2 \]
    8. +-commutativeN/A

      \[\leadsto d1 \cdot d2 \]
    9. distribute-lft-outN/A

      \[\leadsto \color{blue}{d1} \cdot d2 \]
    10. +-commutativeN/A

      \[\leadsto \color{blue}{d1} \cdot d2 \]
    11. *-commutativeN/A

      \[\leadsto d1 \cdot d2 \]
    12. +-commutativeN/A

      \[\leadsto d1 \cdot d2 \]
    13. metadata-evalN/A

      \[\leadsto d1 \cdot d2 \]
    14. metadata-evalN/A

      \[\leadsto d1 \cdot d2 \]
    15. fp-cancel-sub-sign-invN/A

      \[\leadsto d1 \cdot d2 \]
    16. metadata-evalN/A

      \[\leadsto d1 \cdot d2 \]
    17. *-commutativeN/A

      \[\leadsto d1 \cdot d2 \]
    18. lower-*.f6440.0

      \[\leadsto d1 \cdot \color{blue}{d2} \]
  8. Applied rewrites40.0%

    \[\leadsto \color{blue}{d1 \cdot d2} \]
  9. Taylor expanded in d1 around 0

    \[\leadsto \color{blue}{d1 \cdot \left(37 + \left(d2 + d3\right)\right)} \]
  10. Step-by-step derivation
    1. *-commutativeN/A

      \[\leadsto \left(37 + \left(d2 + d3\right)\right) \cdot \color{blue}{d1} \]
    2. lower-*.f64N/A

      \[\leadsto \left(37 + \left(d2 + d3\right)\right) \cdot \color{blue}{d1} \]
    3. associate-+r+N/A

      \[\leadsto \left(\left(37 + d2\right) + d3\right) \cdot d1 \]
    4. +-commutativeN/A

      \[\leadsto \left(\left(d2 + 37\right) + d3\right) \cdot d1 \]
    5. metadata-evalN/A

      \[\leadsto \left(\left(d2 + -37 \cdot -1\right) + d3\right) \cdot d1 \]
    6. metadata-evalN/A

      \[\leadsto \left(\left(d2 + \left(\mathsf{neg}\left(37\right)\right) \cdot -1\right) + d3\right) \cdot d1 \]
    7. fp-cancel-sub-sign-invN/A

      \[\leadsto \left(\left(d2 - 37 \cdot -1\right) + d3\right) \cdot d1 \]
    8. metadata-evalN/A

      \[\leadsto \left(\left(d2 - -37\right) + d3\right) \cdot d1 \]
    9. associate-+l-N/A

      \[\leadsto \left(d2 - \left(-37 - d3\right)\right) \cdot d1 \]
    10. lower--.f64N/A

      \[\leadsto \left(d2 - \left(-37 - d3\right)\right) \cdot d1 \]
    11. lower--.f64100.0

      \[\leadsto \left(d2 - \left(-37 - d3\right)\right) \cdot d1 \]
  11. Applied rewrites100.0%

    \[\leadsto \color{blue}{\left(d2 - \left(-37 - d3\right)\right) \cdot d1} \]
  12. Add Preprocessing

Alternative 2: 75.4% accurate, 0.7× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32 \leq -5 \cdot 10^{-239}:\\ \;\;\;\;\left(d2 - -37\right) \cdot d1\\ \mathbf{else}:\\ \;\;\;\;\left(d3 - -37\right) \cdot d1\\ \end{array} \end{array} \]
(FPCore (d1 d2 d3)
 :precision binary64
 (if (<= (+ (+ (* d1 d2) (* (+ d3 5.0) d1)) (* d1 32.0)) -5e-239)
   (* (- d2 -37.0) d1)
   (* (- d3 -37.0) d1)))
double code(double d1, double d2, double d3) {
	double tmp;
	if ((((d1 * d2) + ((d3 + 5.0) * d1)) + (d1 * 32.0)) <= -5e-239) {
		tmp = (d2 - -37.0) * d1;
	} else {
		tmp = (d3 - -37.0) * d1;
	}
	return tmp;
}
module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(d1, d2, d3)
use fmin_fmax_functions
    real(8), intent (in) :: d1
    real(8), intent (in) :: d2
    real(8), intent (in) :: d3
    real(8) :: tmp
    if ((((d1 * d2) + ((d3 + 5.0d0) * d1)) + (d1 * 32.0d0)) <= (-5d-239)) then
        tmp = (d2 - (-37.0d0)) * d1
    else
        tmp = (d3 - (-37.0d0)) * d1
    end if
    code = tmp
end function
public static double code(double d1, double d2, double d3) {
	double tmp;
	if ((((d1 * d2) + ((d3 + 5.0) * d1)) + (d1 * 32.0)) <= -5e-239) {
		tmp = (d2 - -37.0) * d1;
	} else {
		tmp = (d3 - -37.0) * d1;
	}
	return tmp;
}
def code(d1, d2, d3):
	tmp = 0
	if (((d1 * d2) + ((d3 + 5.0) * d1)) + (d1 * 32.0)) <= -5e-239:
		tmp = (d2 - -37.0) * d1
	else:
		tmp = (d3 - -37.0) * d1
	return tmp
function code(d1, d2, d3)
	tmp = 0.0
	if (Float64(Float64(Float64(d1 * d2) + Float64(Float64(d3 + 5.0) * d1)) + Float64(d1 * 32.0)) <= -5e-239)
		tmp = Float64(Float64(d2 - -37.0) * d1);
	else
		tmp = Float64(Float64(d3 - -37.0) * d1);
	end
	return tmp
end
function tmp_2 = code(d1, d2, d3)
	tmp = 0.0;
	if ((((d1 * d2) + ((d3 + 5.0) * d1)) + (d1 * 32.0)) <= -5e-239)
		tmp = (d2 - -37.0) * d1;
	else
		tmp = (d3 - -37.0) * d1;
	end
	tmp_2 = tmp;
end
code[d1_, d2_, d3_] := If[LessEqual[N[(N[(N[(d1 * d2), $MachinePrecision] + N[(N[(d3 + 5.0), $MachinePrecision] * d1), $MachinePrecision]), $MachinePrecision] + N[(d1 * 32.0), $MachinePrecision]), $MachinePrecision], -5e-239], N[(N[(d2 - -37.0), $MachinePrecision] * d1), $MachinePrecision], N[(N[(d3 - -37.0), $MachinePrecision] * d1), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32 \leq -5 \cdot 10^{-239}:\\
\;\;\;\;\left(d2 - -37\right) \cdot d1\\

\mathbf{else}:\\
\;\;\;\;\left(d3 - -37\right) \cdot d1\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (+.f64 (+.f64 (*.f64 d1 d2) (*.f64 (+.f64 d3 #s(literal 5 binary64)) d1)) (*.f64 d1 #s(literal 32 binary64))) < -5e-239

    1. Initial program 97.9%

      \[\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32 \]
    2. Taylor expanded in d3 around 0

      \[\leadsto \color{blue}{5 \cdot d1 + \left(32 \cdot d1 + d1 \cdot d2\right)} \]
    3. Step-by-step derivation
      1. associate-+r+N/A

        \[\leadsto \left(5 \cdot d1 + 32 \cdot d1\right) + \color{blue}{d1 \cdot d2} \]
      2. distribute-rgt-outN/A

        \[\leadsto d1 \cdot \left(5 + 32\right) + \color{blue}{d1} \cdot d2 \]
      3. metadata-evalN/A

        \[\leadsto d1 \cdot 37 + d1 \cdot d2 \]
      4. *-commutativeN/A

        \[\leadsto 37 \cdot d1 + \color{blue}{d1} \cdot d2 \]
      5. lower-fma.f64N/A

        \[\leadsto \mathsf{fma}\left(37, \color{blue}{d1}, d1 \cdot d2\right) \]
      6. *-commutativeN/A

        \[\leadsto \mathsf{fma}\left(37, d1, d2 \cdot d1\right) \]
      7. lower-*.f6464.4

        \[\leadsto \mathsf{fma}\left(37, d1, d2 \cdot d1\right) \]
    4. Applied rewrites64.4%

      \[\leadsto \color{blue}{\mathsf{fma}\left(37, d1, d2 \cdot d1\right)} \]
    5. Step-by-step derivation
      1. lift-*.f64N/A

        \[\leadsto \mathsf{fma}\left(37, d1, d2 \cdot d1\right) \]
      2. lift-fma.f64N/A

        \[\leadsto 37 \cdot d1 + \color{blue}{d2 \cdot d1} \]
      3. distribute-rgt-outN/A

        \[\leadsto d1 \cdot \color{blue}{\left(37 + d2\right)} \]
      4. *-commutativeN/A

        \[\leadsto \left(37 + d2\right) \cdot \color{blue}{d1} \]
      5. lower-*.f64N/A

        \[\leadsto \left(37 + d2\right) \cdot \color{blue}{d1} \]
      6. +-commutativeN/A

        \[\leadsto \left(d2 + 37\right) \cdot d1 \]
      7. metadata-evalN/A

        \[\leadsto \left(d2 + 37 \cdot 1\right) \cdot d1 \]
      8. fp-cancel-sign-sub-invN/A

        \[\leadsto \left(d2 - \left(\mathsf{neg}\left(37\right)\right) \cdot 1\right) \cdot d1 \]
      9. metadata-evalN/A

        \[\leadsto \left(d2 - -37 \cdot 1\right) \cdot d1 \]
      10. metadata-evalN/A

        \[\leadsto \left(d2 - -37\right) \cdot d1 \]
      11. lower--.f6464.4

        \[\leadsto \left(d2 - -37\right) \cdot d1 \]
    6. Applied rewrites64.4%

      \[\leadsto \left(d2 - -37\right) \cdot \color{blue}{d1} \]

    if -5e-239 < (+.f64 (+.f64 (*.f64 d1 d2) (*.f64 (+.f64 d3 #s(literal 5 binary64)) d1)) (*.f64 d1 #s(literal 32 binary64)))

    1. Initial program 97.9%

      \[\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32 \]
    2. Step-by-step derivation
      1. lift-*.f64N/A

        \[\leadsto \left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + \color{blue}{d1 \cdot 32} \]
      2. lift-+.f64N/A

        \[\leadsto \color{blue}{\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32} \]
      3. lift-*.f64N/A

        \[\leadsto \left(\color{blue}{d1 \cdot d2} + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32 \]
      4. lift-+.f64N/A

        \[\leadsto \color{blue}{\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right)} + d1 \cdot 32 \]
      5. lift-*.f64N/A

        \[\leadsto \left(d1 \cdot d2 + \color{blue}{\left(d3 + 5\right) \cdot d1}\right) + d1 \cdot 32 \]
      6. lift-+.f64N/A

        \[\leadsto \left(d1 \cdot d2 + \color{blue}{\left(d3 + 5\right)} \cdot d1\right) + d1 \cdot 32 \]
      7. *-commutativeN/A

        \[\leadsto \left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + \color{blue}{32 \cdot d1} \]
      8. +-commutativeN/A

        \[\leadsto \color{blue}{32 \cdot d1 + \left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right)} \]
      9. +-commutativeN/A

        \[\leadsto 32 \cdot d1 + \color{blue}{\left(\left(d3 + 5\right) \cdot d1 + d1 \cdot d2\right)} \]
      10. *-commutativeN/A

        \[\leadsto 32 \cdot d1 + \left(\color{blue}{d1 \cdot \left(d3 + 5\right)} + d1 \cdot d2\right) \]
      11. +-commutativeN/A

        \[\leadsto 32 \cdot d1 + \left(d1 \cdot \color{blue}{\left(5 + d3\right)} + d1 \cdot d2\right) \]
      12. associate-+r+N/A

        \[\leadsto \color{blue}{\left(32 \cdot d1 + d1 \cdot \left(5 + d3\right)\right) + d1 \cdot d2} \]
      13. distribute-rgt-inN/A

        \[\leadsto \left(32 \cdot d1 + \color{blue}{\left(5 \cdot d1 + d3 \cdot d1\right)}\right) + d1 \cdot d2 \]
      14. *-commutativeN/A

        \[\leadsto \left(32 \cdot d1 + \left(5 \cdot d1 + \color{blue}{d1 \cdot d3}\right)\right) + d1 \cdot d2 \]
      15. associate-+r+N/A

        \[\leadsto \color{blue}{\left(\left(32 \cdot d1 + 5 \cdot d1\right) + d1 \cdot d3\right)} + d1 \cdot d2 \]
      16. +-commutativeN/A

        \[\leadsto \left(\color{blue}{\left(5 \cdot d1 + 32 \cdot d1\right)} + d1 \cdot d3\right) + d1 \cdot d2 \]
      17. associate-+r+N/A

        \[\leadsto \color{blue}{\left(5 \cdot d1 + 32 \cdot d1\right) + \left(d1 \cdot d3 + d1 \cdot d2\right)} \]
      18. +-commutativeN/A

        \[\leadsto \left(5 \cdot d1 + 32 \cdot d1\right) + \color{blue}{\left(d1 \cdot d2 + d1 \cdot d3\right)} \]
    3. Applied rewrites100.0%

      \[\leadsto \color{blue}{\left(\left(d3 + d2\right) + 37\right) \cdot d1} \]
    4. Taylor expanded in d2 around 0

      \[\leadsto \color{blue}{\left(37 + d3\right)} \cdot d1 \]
    5. Step-by-step derivation
      1. +-commutativeN/A

        \[\leadsto \left(d3 + \color{blue}{37}\right) \cdot d1 \]
      2. metadata-evalN/A

        \[\leadsto \left(d3 + 37 \cdot \color{blue}{1}\right) \cdot d1 \]
      3. fp-cancel-sign-sub-invN/A

        \[\leadsto \left(d3 - \color{blue}{\left(\mathsf{neg}\left(37\right)\right) \cdot 1}\right) \cdot d1 \]
      4. metadata-evalN/A

        \[\leadsto \left(d3 - -37 \cdot 1\right) \cdot d1 \]
      5. metadata-evalN/A

        \[\leadsto \left(d3 - -37\right) \cdot d1 \]
      6. lower--.f6464.1

        \[\leadsto \left(d3 - \color{blue}{-37}\right) \cdot d1 \]
    6. Applied rewrites64.1%

      \[\leadsto \color{blue}{\left(d3 - -37\right)} \cdot d1 \]
  3. Recombined 2 regimes into one program.
  4. Add Preprocessing

Alternative 3: 64.3% accurate, 1.7× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;d3 \leq 4100000:\\ \;\;\;\;\left(d2 - -37\right) \cdot d1\\ \mathbf{else}:\\ \;\;\;\;d3 \cdot d1\\ \end{array} \end{array} \]
(FPCore (d1 d2 d3)
 :precision binary64
 (if (<= d3 4100000.0) (* (- d2 -37.0) d1) (* d3 d1)))
double code(double d1, double d2, double d3) {
	double tmp;
	if (d3 <= 4100000.0) {
		tmp = (d2 - -37.0) * d1;
	} else {
		tmp = d3 * d1;
	}
	return tmp;
}
module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(d1, d2, d3)
use fmin_fmax_functions
    real(8), intent (in) :: d1
    real(8), intent (in) :: d2
    real(8), intent (in) :: d3
    real(8) :: tmp
    if (d3 <= 4100000.0d0) then
        tmp = (d2 - (-37.0d0)) * d1
    else
        tmp = d3 * d1
    end if
    code = tmp
end function
public static double code(double d1, double d2, double d3) {
	double tmp;
	if (d3 <= 4100000.0) {
		tmp = (d2 - -37.0) * d1;
	} else {
		tmp = d3 * d1;
	}
	return tmp;
}
def code(d1, d2, d3):
	tmp = 0
	if d3 <= 4100000.0:
		tmp = (d2 - -37.0) * d1
	else:
		tmp = d3 * d1
	return tmp
function code(d1, d2, d3)
	tmp = 0.0
	if (d3 <= 4100000.0)
		tmp = Float64(Float64(d2 - -37.0) * d1);
	else
		tmp = Float64(d3 * d1);
	end
	return tmp
end
function tmp_2 = code(d1, d2, d3)
	tmp = 0.0;
	if (d3 <= 4100000.0)
		tmp = (d2 - -37.0) * d1;
	else
		tmp = d3 * d1;
	end
	tmp_2 = tmp;
end
code[d1_, d2_, d3_] := If[LessEqual[d3, 4100000.0], N[(N[(d2 - -37.0), $MachinePrecision] * d1), $MachinePrecision], N[(d3 * d1), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;d3 \leq 4100000:\\
\;\;\;\;\left(d2 - -37\right) \cdot d1\\

\mathbf{else}:\\
\;\;\;\;d3 \cdot d1\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if d3 < 4.1e6

    1. Initial program 97.9%

      \[\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32 \]
    2. Taylor expanded in d3 around 0

      \[\leadsto \color{blue}{5 \cdot d1 + \left(32 \cdot d1 + d1 \cdot d2\right)} \]
    3. Step-by-step derivation
      1. associate-+r+N/A

        \[\leadsto \left(5 \cdot d1 + 32 \cdot d1\right) + \color{blue}{d1 \cdot d2} \]
      2. distribute-rgt-outN/A

        \[\leadsto d1 \cdot \left(5 + 32\right) + \color{blue}{d1} \cdot d2 \]
      3. metadata-evalN/A

        \[\leadsto d1 \cdot 37 + d1 \cdot d2 \]
      4. *-commutativeN/A

        \[\leadsto 37 \cdot d1 + \color{blue}{d1} \cdot d2 \]
      5. lower-fma.f64N/A

        \[\leadsto \mathsf{fma}\left(37, \color{blue}{d1}, d1 \cdot d2\right) \]
      6. *-commutativeN/A

        \[\leadsto \mathsf{fma}\left(37, d1, d2 \cdot d1\right) \]
      7. lower-*.f6464.4

        \[\leadsto \mathsf{fma}\left(37, d1, d2 \cdot d1\right) \]
    4. Applied rewrites64.4%

      \[\leadsto \color{blue}{\mathsf{fma}\left(37, d1, d2 \cdot d1\right)} \]
    5. Step-by-step derivation
      1. lift-*.f64N/A

        \[\leadsto \mathsf{fma}\left(37, d1, d2 \cdot d1\right) \]
      2. lift-fma.f64N/A

        \[\leadsto 37 \cdot d1 + \color{blue}{d2 \cdot d1} \]
      3. distribute-rgt-outN/A

        \[\leadsto d1 \cdot \color{blue}{\left(37 + d2\right)} \]
      4. *-commutativeN/A

        \[\leadsto \left(37 + d2\right) \cdot \color{blue}{d1} \]
      5. lower-*.f64N/A

        \[\leadsto \left(37 + d2\right) \cdot \color{blue}{d1} \]
      6. +-commutativeN/A

        \[\leadsto \left(d2 + 37\right) \cdot d1 \]
      7. metadata-evalN/A

        \[\leadsto \left(d2 + 37 \cdot 1\right) \cdot d1 \]
      8. fp-cancel-sign-sub-invN/A

        \[\leadsto \left(d2 - \left(\mathsf{neg}\left(37\right)\right) \cdot 1\right) \cdot d1 \]
      9. metadata-evalN/A

        \[\leadsto \left(d2 - -37 \cdot 1\right) \cdot d1 \]
      10. metadata-evalN/A

        \[\leadsto \left(d2 - -37\right) \cdot d1 \]
      11. lower--.f6464.4

        \[\leadsto \left(d2 - -37\right) \cdot d1 \]
    6. Applied rewrites64.4%

      \[\leadsto \left(d2 - -37\right) \cdot \color{blue}{d1} \]

    if 4.1e6 < d3

    1. Initial program 97.9%

      \[\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32 \]
    2. Taylor expanded in d3 around inf

      \[\leadsto \color{blue}{d1 \cdot d3} \]
    3. Step-by-step derivation
      1. *-commutativeN/A

        \[\leadsto d3 \cdot \color{blue}{d1} \]
      2. lower-*.f6439.6

        \[\leadsto d3 \cdot \color{blue}{d1} \]
    4. Applied rewrites39.6%

      \[\leadsto \color{blue}{d3 \cdot d1} \]
  3. Recombined 2 regimes into one program.
  4. Add Preprocessing

Alternative 4: 50.7% accurate, 1.6× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;d3 \leq -1.42 \cdot 10^{-238}:\\ \;\;\;\;d1 \cdot d2\\ \mathbf{elif}\;d3 \leq 37:\\ \;\;\;\;d1 \cdot 37\\ \mathbf{else}:\\ \;\;\;\;d3 \cdot d1\\ \end{array} \end{array} \]
(FPCore (d1 d2 d3)
 :precision binary64
 (if (<= d3 -1.42e-238) (* d1 d2) (if (<= d3 37.0) (* d1 37.0) (* d3 d1))))
double code(double d1, double d2, double d3) {
	double tmp;
	if (d3 <= -1.42e-238) {
		tmp = d1 * d2;
	} else if (d3 <= 37.0) {
		tmp = d1 * 37.0;
	} else {
		tmp = d3 * d1;
	}
	return tmp;
}
module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(d1, d2, d3)
use fmin_fmax_functions
    real(8), intent (in) :: d1
    real(8), intent (in) :: d2
    real(8), intent (in) :: d3
    real(8) :: tmp
    if (d3 <= (-1.42d-238)) then
        tmp = d1 * d2
    else if (d3 <= 37.0d0) then
        tmp = d1 * 37.0d0
    else
        tmp = d3 * d1
    end if
    code = tmp
end function
public static double code(double d1, double d2, double d3) {
	double tmp;
	if (d3 <= -1.42e-238) {
		tmp = d1 * d2;
	} else if (d3 <= 37.0) {
		tmp = d1 * 37.0;
	} else {
		tmp = d3 * d1;
	}
	return tmp;
}
def code(d1, d2, d3):
	tmp = 0
	if d3 <= -1.42e-238:
		tmp = d1 * d2
	elif d3 <= 37.0:
		tmp = d1 * 37.0
	else:
		tmp = d3 * d1
	return tmp
function code(d1, d2, d3)
	tmp = 0.0
	if (d3 <= -1.42e-238)
		tmp = Float64(d1 * d2);
	elseif (d3 <= 37.0)
		tmp = Float64(d1 * 37.0);
	else
		tmp = Float64(d3 * d1);
	end
	return tmp
end
function tmp_2 = code(d1, d2, d3)
	tmp = 0.0;
	if (d3 <= -1.42e-238)
		tmp = d1 * d2;
	elseif (d3 <= 37.0)
		tmp = d1 * 37.0;
	else
		tmp = d3 * d1;
	end
	tmp_2 = tmp;
end
code[d1_, d2_, d3_] := If[LessEqual[d3, -1.42e-238], N[(d1 * d2), $MachinePrecision], If[LessEqual[d3, 37.0], N[(d1 * 37.0), $MachinePrecision], N[(d3 * d1), $MachinePrecision]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;d3 \leq -1.42 \cdot 10^{-238}:\\
\;\;\;\;d1 \cdot d2\\

\mathbf{elif}\;d3 \leq 37:\\
\;\;\;\;d1 \cdot 37\\

\mathbf{else}:\\
\;\;\;\;d3 \cdot d1\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if d3 < -1.4199999999999999e-238

    1. Initial program 97.9%

      \[\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32 \]
    2. Step-by-step derivation
      1. lift-*.f64N/A

        \[\leadsto \left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + \color{blue}{d1 \cdot 32} \]
      2. lift-+.f64N/A

        \[\leadsto \color{blue}{\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32} \]
      3. lift-*.f64N/A

        \[\leadsto \left(\color{blue}{d1 \cdot d2} + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32 \]
      4. lift-+.f64N/A

        \[\leadsto \color{blue}{\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right)} + d1 \cdot 32 \]
      5. lift-*.f64N/A

        \[\leadsto \left(d1 \cdot d2 + \color{blue}{\left(d3 + 5\right) \cdot d1}\right) + d1 \cdot 32 \]
      6. lift-+.f64N/A

        \[\leadsto \left(d1 \cdot d2 + \color{blue}{\left(d3 + 5\right)} \cdot d1\right) + d1 \cdot 32 \]
      7. *-commutativeN/A

        \[\leadsto \left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + \color{blue}{32 \cdot d1} \]
      8. +-commutativeN/A

        \[\leadsto \color{blue}{32 \cdot d1 + \left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right)} \]
      9. +-commutativeN/A

        \[\leadsto 32 \cdot d1 + \color{blue}{\left(\left(d3 + 5\right) \cdot d1 + d1 \cdot d2\right)} \]
      10. *-commutativeN/A

        \[\leadsto 32 \cdot d1 + \left(\color{blue}{d1 \cdot \left(d3 + 5\right)} + d1 \cdot d2\right) \]
      11. +-commutativeN/A

        \[\leadsto 32 \cdot d1 + \left(d1 \cdot \color{blue}{\left(5 + d3\right)} + d1 \cdot d2\right) \]
      12. associate-+r+N/A

        \[\leadsto \color{blue}{\left(32 \cdot d1 + d1 \cdot \left(5 + d3\right)\right) + d1 \cdot d2} \]
      13. distribute-rgt-inN/A

        \[\leadsto \left(32 \cdot d1 + \color{blue}{\left(5 \cdot d1 + d3 \cdot d1\right)}\right) + d1 \cdot d2 \]
      14. *-commutativeN/A

        \[\leadsto \left(32 \cdot d1 + \left(5 \cdot d1 + \color{blue}{d1 \cdot d3}\right)\right) + d1 \cdot d2 \]
      15. associate-+r+N/A

        \[\leadsto \color{blue}{\left(\left(32 \cdot d1 + 5 \cdot d1\right) + d1 \cdot d3\right)} + d1 \cdot d2 \]
      16. +-commutativeN/A

        \[\leadsto \left(\color{blue}{\left(5 \cdot d1 + 32 \cdot d1\right)} + d1 \cdot d3\right) + d1 \cdot d2 \]
      17. associate-+r+N/A

        \[\leadsto \color{blue}{\left(5 \cdot d1 + 32 \cdot d1\right) + \left(d1 \cdot d3 + d1 \cdot d2\right)} \]
      18. +-commutativeN/A

        \[\leadsto \left(5 \cdot d1 + 32 \cdot d1\right) + \color{blue}{\left(d1 \cdot d2 + d1 \cdot d3\right)} \]
    3. Applied rewrites100.0%

      \[\leadsto \color{blue}{\left(\left(d3 + d2\right) + 37\right) \cdot d1} \]
    4. Step-by-step derivation
      1. lift-+.f64N/A

        \[\leadsto \left(\color{blue}{\left(d3 + d2\right)} + 37\right) \cdot d1 \]
      2. lift-+.f64N/A

        \[\leadsto \color{blue}{\left(\left(d3 + d2\right) + 37\right)} \cdot d1 \]
      3. metadata-evalN/A

        \[\leadsto \left(\left(d3 + d2\right) + \color{blue}{37 \cdot 1}\right) \cdot d1 \]
      4. fp-cancel-sign-sub-invN/A

        \[\leadsto \color{blue}{\left(\left(d3 + d2\right) - \left(\mathsf{neg}\left(37\right)\right) \cdot 1\right)} \cdot d1 \]
      5. metadata-evalN/A

        \[\leadsto \left(\left(d3 + d2\right) - \color{blue}{-37} \cdot 1\right) \cdot d1 \]
      6. metadata-evalN/A

        \[\leadsto \left(\left(d3 + d2\right) - \color{blue}{-37}\right) \cdot d1 \]
      7. lower--.f64N/A

        \[\leadsto \color{blue}{\left(\left(d3 + d2\right) - -37\right)} \cdot d1 \]
      8. +-commutativeN/A

        \[\leadsto \left(\color{blue}{\left(d2 + d3\right)} - -37\right) \cdot d1 \]
      9. lower-+.f64100.0

        \[\leadsto \left(\color{blue}{\left(d2 + d3\right)} - -37\right) \cdot d1 \]
    5. Applied rewrites100.0%

      \[\leadsto \color{blue}{\left(\left(d2 + d3\right) - -37\right) \cdot d1} \]
    6. Taylor expanded in d2 around inf

      \[\leadsto \color{blue}{d1 \cdot d2} \]
    7. Step-by-step derivation
      1. *-commutativeN/A

        \[\leadsto \color{blue}{d1} \cdot d2 \]
      2. metadata-evalN/A

        \[\leadsto d1 \cdot d2 \]
      3. fp-cancel-sub-sign-invN/A

        \[\leadsto d1 \cdot d2 \]
      4. +-commutativeN/A

        \[\leadsto d1 \cdot d2 \]
      5. metadata-evalN/A

        \[\leadsto d1 \cdot d2 \]
      6. metadata-evalN/A

        \[\leadsto d1 \cdot d2 \]
      7. associate-+l+N/A

        \[\leadsto d1 \cdot d2 \]
      8. +-commutativeN/A

        \[\leadsto d1 \cdot d2 \]
      9. distribute-lft-outN/A

        \[\leadsto \color{blue}{d1} \cdot d2 \]
      10. +-commutativeN/A

        \[\leadsto \color{blue}{d1} \cdot d2 \]
      11. *-commutativeN/A

        \[\leadsto d1 \cdot d2 \]
      12. +-commutativeN/A

        \[\leadsto d1 \cdot d2 \]
      13. metadata-evalN/A

        \[\leadsto d1 \cdot d2 \]
      14. metadata-evalN/A

        \[\leadsto d1 \cdot d2 \]
      15. fp-cancel-sub-sign-invN/A

        \[\leadsto d1 \cdot d2 \]
      16. metadata-evalN/A

        \[\leadsto d1 \cdot d2 \]
      17. *-commutativeN/A

        \[\leadsto d1 \cdot d2 \]
      18. lower-*.f6440.0

        \[\leadsto d1 \cdot \color{blue}{d2} \]
    8. Applied rewrites40.0%

      \[\leadsto \color{blue}{d1 \cdot d2} \]

    if -1.4199999999999999e-238 < d3 < 37

    1. Initial program 97.9%

      \[\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32 \]
    2. Taylor expanded in d3 around 0

      \[\leadsto \color{blue}{5 \cdot d1 + \left(32 \cdot d1 + d1 \cdot d2\right)} \]
    3. Step-by-step derivation
      1. associate-+r+N/A

        \[\leadsto \left(5 \cdot d1 + 32 \cdot d1\right) + \color{blue}{d1 \cdot d2} \]
      2. distribute-rgt-outN/A

        \[\leadsto d1 \cdot \left(5 + 32\right) + \color{blue}{d1} \cdot d2 \]
      3. metadata-evalN/A

        \[\leadsto d1 \cdot 37 + d1 \cdot d2 \]
      4. *-commutativeN/A

        \[\leadsto 37 \cdot d1 + \color{blue}{d1} \cdot d2 \]
      5. lower-fma.f64N/A

        \[\leadsto \mathsf{fma}\left(37, \color{blue}{d1}, d1 \cdot d2\right) \]
      6. *-commutativeN/A

        \[\leadsto \mathsf{fma}\left(37, d1, d2 \cdot d1\right) \]
      7. lower-*.f6464.4

        \[\leadsto \mathsf{fma}\left(37, d1, d2 \cdot d1\right) \]
    4. Applied rewrites64.4%

      \[\leadsto \color{blue}{\mathsf{fma}\left(37, d1, d2 \cdot d1\right)} \]
    5. Taylor expanded in d2 around 0

      \[\leadsto 37 \cdot \color{blue}{d1} \]
    6. Step-by-step derivation
      1. *-commutativeN/A

        \[\leadsto d1 \cdot 37 \]
      2. lower-*.f6427.0

        \[\leadsto d1 \cdot 37 \]
    7. Applied rewrites27.0%

      \[\leadsto d1 \cdot \color{blue}{37} \]

    if 37 < d3

    1. Initial program 97.9%

      \[\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32 \]
    2. Taylor expanded in d3 around inf

      \[\leadsto \color{blue}{d1 \cdot d3} \]
    3. Step-by-step derivation
      1. *-commutativeN/A

        \[\leadsto d3 \cdot \color{blue}{d1} \]
      2. lower-*.f6439.6

        \[\leadsto d3 \cdot \color{blue}{d1} \]
    4. Applied rewrites39.6%

      \[\leadsto \color{blue}{d3 \cdot d1} \]
  3. Recombined 3 regimes into one program.
  4. Add Preprocessing

Alternative 5: 45.5% accurate, 2.3× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;d2 \leq -42:\\ \;\;\;\;d1 \cdot d2\\ \mathbf{else}:\\ \;\;\;\;d1 \cdot 37\\ \end{array} \end{array} \]
(FPCore (d1 d2 d3)
 :precision binary64
 (if (<= d2 -42.0) (* d1 d2) (* d1 37.0)))
double code(double d1, double d2, double d3) {
	double tmp;
	if (d2 <= -42.0) {
		tmp = d1 * d2;
	} else {
		tmp = d1 * 37.0;
	}
	return tmp;
}
module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(d1, d2, d3)
use fmin_fmax_functions
    real(8), intent (in) :: d1
    real(8), intent (in) :: d2
    real(8), intent (in) :: d3
    real(8) :: tmp
    if (d2 <= (-42.0d0)) then
        tmp = d1 * d2
    else
        tmp = d1 * 37.0d0
    end if
    code = tmp
end function
public static double code(double d1, double d2, double d3) {
	double tmp;
	if (d2 <= -42.0) {
		tmp = d1 * d2;
	} else {
		tmp = d1 * 37.0;
	}
	return tmp;
}
def code(d1, d2, d3):
	tmp = 0
	if d2 <= -42.0:
		tmp = d1 * d2
	else:
		tmp = d1 * 37.0
	return tmp
function code(d1, d2, d3)
	tmp = 0.0
	if (d2 <= -42.0)
		tmp = Float64(d1 * d2);
	else
		tmp = Float64(d1 * 37.0);
	end
	return tmp
end
function tmp_2 = code(d1, d2, d3)
	tmp = 0.0;
	if (d2 <= -42.0)
		tmp = d1 * d2;
	else
		tmp = d1 * 37.0;
	end
	tmp_2 = tmp;
end
code[d1_, d2_, d3_] := If[LessEqual[d2, -42.0], N[(d1 * d2), $MachinePrecision], N[(d1 * 37.0), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;d2 \leq -42:\\
\;\;\;\;d1 \cdot d2\\

\mathbf{else}:\\
\;\;\;\;d1 \cdot 37\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if d2 < -42

    1. Initial program 97.9%

      \[\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32 \]
    2. Step-by-step derivation
      1. lift-*.f64N/A

        \[\leadsto \left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + \color{blue}{d1 \cdot 32} \]
      2. lift-+.f64N/A

        \[\leadsto \color{blue}{\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32} \]
      3. lift-*.f64N/A

        \[\leadsto \left(\color{blue}{d1 \cdot d2} + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32 \]
      4. lift-+.f64N/A

        \[\leadsto \color{blue}{\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right)} + d1 \cdot 32 \]
      5. lift-*.f64N/A

        \[\leadsto \left(d1 \cdot d2 + \color{blue}{\left(d3 + 5\right) \cdot d1}\right) + d1 \cdot 32 \]
      6. lift-+.f64N/A

        \[\leadsto \left(d1 \cdot d2 + \color{blue}{\left(d3 + 5\right)} \cdot d1\right) + d1 \cdot 32 \]
      7. *-commutativeN/A

        \[\leadsto \left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + \color{blue}{32 \cdot d1} \]
      8. +-commutativeN/A

        \[\leadsto \color{blue}{32 \cdot d1 + \left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right)} \]
      9. +-commutativeN/A

        \[\leadsto 32 \cdot d1 + \color{blue}{\left(\left(d3 + 5\right) \cdot d1 + d1 \cdot d2\right)} \]
      10. *-commutativeN/A

        \[\leadsto 32 \cdot d1 + \left(\color{blue}{d1 \cdot \left(d3 + 5\right)} + d1 \cdot d2\right) \]
      11. +-commutativeN/A

        \[\leadsto 32 \cdot d1 + \left(d1 \cdot \color{blue}{\left(5 + d3\right)} + d1 \cdot d2\right) \]
      12. associate-+r+N/A

        \[\leadsto \color{blue}{\left(32 \cdot d1 + d1 \cdot \left(5 + d3\right)\right) + d1 \cdot d2} \]
      13. distribute-rgt-inN/A

        \[\leadsto \left(32 \cdot d1 + \color{blue}{\left(5 \cdot d1 + d3 \cdot d1\right)}\right) + d1 \cdot d2 \]
      14. *-commutativeN/A

        \[\leadsto \left(32 \cdot d1 + \left(5 \cdot d1 + \color{blue}{d1 \cdot d3}\right)\right) + d1 \cdot d2 \]
      15. associate-+r+N/A

        \[\leadsto \color{blue}{\left(\left(32 \cdot d1 + 5 \cdot d1\right) + d1 \cdot d3\right)} + d1 \cdot d2 \]
      16. +-commutativeN/A

        \[\leadsto \left(\color{blue}{\left(5 \cdot d1 + 32 \cdot d1\right)} + d1 \cdot d3\right) + d1 \cdot d2 \]
      17. associate-+r+N/A

        \[\leadsto \color{blue}{\left(5 \cdot d1 + 32 \cdot d1\right) + \left(d1 \cdot d3 + d1 \cdot d2\right)} \]
      18. +-commutativeN/A

        \[\leadsto \left(5 \cdot d1 + 32 \cdot d1\right) + \color{blue}{\left(d1 \cdot d2 + d1 \cdot d3\right)} \]
    3. Applied rewrites100.0%

      \[\leadsto \color{blue}{\left(\left(d3 + d2\right) + 37\right) \cdot d1} \]
    4. Step-by-step derivation
      1. lift-+.f64N/A

        \[\leadsto \left(\color{blue}{\left(d3 + d2\right)} + 37\right) \cdot d1 \]
      2. lift-+.f64N/A

        \[\leadsto \color{blue}{\left(\left(d3 + d2\right) + 37\right)} \cdot d1 \]
      3. metadata-evalN/A

        \[\leadsto \left(\left(d3 + d2\right) + \color{blue}{37 \cdot 1}\right) \cdot d1 \]
      4. fp-cancel-sign-sub-invN/A

        \[\leadsto \color{blue}{\left(\left(d3 + d2\right) - \left(\mathsf{neg}\left(37\right)\right) \cdot 1\right)} \cdot d1 \]
      5. metadata-evalN/A

        \[\leadsto \left(\left(d3 + d2\right) - \color{blue}{-37} \cdot 1\right) \cdot d1 \]
      6. metadata-evalN/A

        \[\leadsto \left(\left(d3 + d2\right) - \color{blue}{-37}\right) \cdot d1 \]
      7. lower--.f64N/A

        \[\leadsto \color{blue}{\left(\left(d3 + d2\right) - -37\right)} \cdot d1 \]
      8. +-commutativeN/A

        \[\leadsto \left(\color{blue}{\left(d2 + d3\right)} - -37\right) \cdot d1 \]
      9. lower-+.f64100.0

        \[\leadsto \left(\color{blue}{\left(d2 + d3\right)} - -37\right) \cdot d1 \]
    5. Applied rewrites100.0%

      \[\leadsto \color{blue}{\left(\left(d2 + d3\right) - -37\right) \cdot d1} \]
    6. Taylor expanded in d2 around inf

      \[\leadsto \color{blue}{d1 \cdot d2} \]
    7. Step-by-step derivation
      1. *-commutativeN/A

        \[\leadsto \color{blue}{d1} \cdot d2 \]
      2. metadata-evalN/A

        \[\leadsto d1 \cdot d2 \]
      3. fp-cancel-sub-sign-invN/A

        \[\leadsto d1 \cdot d2 \]
      4. +-commutativeN/A

        \[\leadsto d1 \cdot d2 \]
      5. metadata-evalN/A

        \[\leadsto d1 \cdot d2 \]
      6. metadata-evalN/A

        \[\leadsto d1 \cdot d2 \]
      7. associate-+l+N/A

        \[\leadsto d1 \cdot d2 \]
      8. +-commutativeN/A

        \[\leadsto d1 \cdot d2 \]
      9. distribute-lft-outN/A

        \[\leadsto \color{blue}{d1} \cdot d2 \]
      10. +-commutativeN/A

        \[\leadsto \color{blue}{d1} \cdot d2 \]
      11. *-commutativeN/A

        \[\leadsto d1 \cdot d2 \]
      12. +-commutativeN/A

        \[\leadsto d1 \cdot d2 \]
      13. metadata-evalN/A

        \[\leadsto d1 \cdot d2 \]
      14. metadata-evalN/A

        \[\leadsto d1 \cdot d2 \]
      15. fp-cancel-sub-sign-invN/A

        \[\leadsto d1 \cdot d2 \]
      16. metadata-evalN/A

        \[\leadsto d1 \cdot d2 \]
      17. *-commutativeN/A

        \[\leadsto d1 \cdot d2 \]
      18. lower-*.f6440.0

        \[\leadsto d1 \cdot \color{blue}{d2} \]
    8. Applied rewrites40.0%

      \[\leadsto \color{blue}{d1 \cdot d2} \]

    if -42 < d2

    1. Initial program 97.9%

      \[\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32 \]
    2. Taylor expanded in d3 around 0

      \[\leadsto \color{blue}{5 \cdot d1 + \left(32 \cdot d1 + d1 \cdot d2\right)} \]
    3. Step-by-step derivation
      1. associate-+r+N/A

        \[\leadsto \left(5 \cdot d1 + 32 \cdot d1\right) + \color{blue}{d1 \cdot d2} \]
      2. distribute-rgt-outN/A

        \[\leadsto d1 \cdot \left(5 + 32\right) + \color{blue}{d1} \cdot d2 \]
      3. metadata-evalN/A

        \[\leadsto d1 \cdot 37 + d1 \cdot d2 \]
      4. *-commutativeN/A

        \[\leadsto 37 \cdot d1 + \color{blue}{d1} \cdot d2 \]
      5. lower-fma.f64N/A

        \[\leadsto \mathsf{fma}\left(37, \color{blue}{d1}, d1 \cdot d2\right) \]
      6. *-commutativeN/A

        \[\leadsto \mathsf{fma}\left(37, d1, d2 \cdot d1\right) \]
      7. lower-*.f6464.4

        \[\leadsto \mathsf{fma}\left(37, d1, d2 \cdot d1\right) \]
    4. Applied rewrites64.4%

      \[\leadsto \color{blue}{\mathsf{fma}\left(37, d1, d2 \cdot d1\right)} \]
    5. Taylor expanded in d2 around 0

      \[\leadsto 37 \cdot \color{blue}{d1} \]
    6. Step-by-step derivation
      1. *-commutativeN/A

        \[\leadsto d1 \cdot 37 \]
      2. lower-*.f6427.0

        \[\leadsto d1 \cdot 37 \]
    7. Applied rewrites27.0%

      \[\leadsto d1 \cdot \color{blue}{37} \]
  3. Recombined 2 regimes into one program.
  4. Add Preprocessing

Alternative 6: 40.0% accurate, 4.6× speedup?

\[\begin{array}{l} \\ d1 \cdot d2 \end{array} \]
(FPCore (d1 d2 d3) :precision binary64 (* d1 d2))
double code(double d1, double d2, double d3) {
	return d1 * d2;
}
module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(d1, d2, d3)
use fmin_fmax_functions
    real(8), intent (in) :: d1
    real(8), intent (in) :: d2
    real(8), intent (in) :: d3
    code = d1 * d2
end function
public static double code(double d1, double d2, double d3) {
	return d1 * d2;
}
def code(d1, d2, d3):
	return d1 * d2
function code(d1, d2, d3)
	return Float64(d1 * d2)
end
function tmp = code(d1, d2, d3)
	tmp = d1 * d2;
end
code[d1_, d2_, d3_] := N[(d1 * d2), $MachinePrecision]
\begin{array}{l}

\\
d1 \cdot d2
\end{array}
Derivation
  1. Initial program 97.9%

    \[\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32 \]
  2. Step-by-step derivation
    1. lift-*.f64N/A

      \[\leadsto \left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + \color{blue}{d1 \cdot 32} \]
    2. lift-+.f64N/A

      \[\leadsto \color{blue}{\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32} \]
    3. lift-*.f64N/A

      \[\leadsto \left(\color{blue}{d1 \cdot d2} + \left(d3 + 5\right) \cdot d1\right) + d1 \cdot 32 \]
    4. lift-+.f64N/A

      \[\leadsto \color{blue}{\left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right)} + d1 \cdot 32 \]
    5. lift-*.f64N/A

      \[\leadsto \left(d1 \cdot d2 + \color{blue}{\left(d3 + 5\right) \cdot d1}\right) + d1 \cdot 32 \]
    6. lift-+.f64N/A

      \[\leadsto \left(d1 \cdot d2 + \color{blue}{\left(d3 + 5\right)} \cdot d1\right) + d1 \cdot 32 \]
    7. *-commutativeN/A

      \[\leadsto \left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right) + \color{blue}{32 \cdot d1} \]
    8. +-commutativeN/A

      \[\leadsto \color{blue}{32 \cdot d1 + \left(d1 \cdot d2 + \left(d3 + 5\right) \cdot d1\right)} \]
    9. +-commutativeN/A

      \[\leadsto 32 \cdot d1 + \color{blue}{\left(\left(d3 + 5\right) \cdot d1 + d1 \cdot d2\right)} \]
    10. *-commutativeN/A

      \[\leadsto 32 \cdot d1 + \left(\color{blue}{d1 \cdot \left(d3 + 5\right)} + d1 \cdot d2\right) \]
    11. +-commutativeN/A

      \[\leadsto 32 \cdot d1 + \left(d1 \cdot \color{blue}{\left(5 + d3\right)} + d1 \cdot d2\right) \]
    12. associate-+r+N/A

      \[\leadsto \color{blue}{\left(32 \cdot d1 + d1 \cdot \left(5 + d3\right)\right) + d1 \cdot d2} \]
    13. distribute-rgt-inN/A

      \[\leadsto \left(32 \cdot d1 + \color{blue}{\left(5 \cdot d1 + d3 \cdot d1\right)}\right) + d1 \cdot d2 \]
    14. *-commutativeN/A

      \[\leadsto \left(32 \cdot d1 + \left(5 \cdot d1 + \color{blue}{d1 \cdot d3}\right)\right) + d1 \cdot d2 \]
    15. associate-+r+N/A

      \[\leadsto \color{blue}{\left(\left(32 \cdot d1 + 5 \cdot d1\right) + d1 \cdot d3\right)} + d1 \cdot d2 \]
    16. +-commutativeN/A

      \[\leadsto \left(\color{blue}{\left(5 \cdot d1 + 32 \cdot d1\right)} + d1 \cdot d3\right) + d1 \cdot d2 \]
    17. associate-+r+N/A

      \[\leadsto \color{blue}{\left(5 \cdot d1 + 32 \cdot d1\right) + \left(d1 \cdot d3 + d1 \cdot d2\right)} \]
    18. +-commutativeN/A

      \[\leadsto \left(5 \cdot d1 + 32 \cdot d1\right) + \color{blue}{\left(d1 \cdot d2 + d1 \cdot d3\right)} \]
  3. Applied rewrites100.0%

    \[\leadsto \color{blue}{\left(\left(d3 + d2\right) + 37\right) \cdot d1} \]
  4. Step-by-step derivation
    1. lift-+.f64N/A

      \[\leadsto \left(\color{blue}{\left(d3 + d2\right)} + 37\right) \cdot d1 \]
    2. lift-+.f64N/A

      \[\leadsto \color{blue}{\left(\left(d3 + d2\right) + 37\right)} \cdot d1 \]
    3. metadata-evalN/A

      \[\leadsto \left(\left(d3 + d2\right) + \color{blue}{37 \cdot 1}\right) \cdot d1 \]
    4. fp-cancel-sign-sub-invN/A

      \[\leadsto \color{blue}{\left(\left(d3 + d2\right) - \left(\mathsf{neg}\left(37\right)\right) \cdot 1\right)} \cdot d1 \]
    5. metadata-evalN/A

      \[\leadsto \left(\left(d3 + d2\right) - \color{blue}{-37} \cdot 1\right) \cdot d1 \]
    6. metadata-evalN/A

      \[\leadsto \left(\left(d3 + d2\right) - \color{blue}{-37}\right) \cdot d1 \]
    7. lower--.f64N/A

      \[\leadsto \color{blue}{\left(\left(d3 + d2\right) - -37\right)} \cdot d1 \]
    8. +-commutativeN/A

      \[\leadsto \left(\color{blue}{\left(d2 + d3\right)} - -37\right) \cdot d1 \]
    9. lower-+.f64100.0

      \[\leadsto \left(\color{blue}{\left(d2 + d3\right)} - -37\right) \cdot d1 \]
  5. Applied rewrites100.0%

    \[\leadsto \color{blue}{\left(\left(d2 + d3\right) - -37\right) \cdot d1} \]
  6. Taylor expanded in d2 around inf

    \[\leadsto \color{blue}{d1 \cdot d2} \]
  7. Step-by-step derivation
    1. *-commutativeN/A

      \[\leadsto \color{blue}{d1} \cdot d2 \]
    2. metadata-evalN/A

      \[\leadsto d1 \cdot d2 \]
    3. fp-cancel-sub-sign-invN/A

      \[\leadsto d1 \cdot d2 \]
    4. +-commutativeN/A

      \[\leadsto d1 \cdot d2 \]
    5. metadata-evalN/A

      \[\leadsto d1 \cdot d2 \]
    6. metadata-evalN/A

      \[\leadsto d1 \cdot d2 \]
    7. associate-+l+N/A

      \[\leadsto d1 \cdot d2 \]
    8. +-commutativeN/A

      \[\leadsto d1 \cdot d2 \]
    9. distribute-lft-outN/A

      \[\leadsto \color{blue}{d1} \cdot d2 \]
    10. +-commutativeN/A

      \[\leadsto \color{blue}{d1} \cdot d2 \]
    11. *-commutativeN/A

      \[\leadsto d1 \cdot d2 \]
    12. +-commutativeN/A

      \[\leadsto d1 \cdot d2 \]
    13. metadata-evalN/A

      \[\leadsto d1 \cdot d2 \]
    14. metadata-evalN/A

      \[\leadsto d1 \cdot d2 \]
    15. fp-cancel-sub-sign-invN/A

      \[\leadsto d1 \cdot d2 \]
    16. metadata-evalN/A

      \[\leadsto d1 \cdot d2 \]
    17. *-commutativeN/A

      \[\leadsto d1 \cdot d2 \]
    18. lower-*.f6440.0

      \[\leadsto d1 \cdot \color{blue}{d2} \]
  8. Applied rewrites40.0%

    \[\leadsto \color{blue}{d1 \cdot d2} \]
  9. Add Preprocessing

Developer Target 1: 100.0% accurate, 1.9× speedup?

\[\begin{array}{l} \\ d1 \cdot \left(\left(37 + d3\right) + d2\right) \end{array} \]
(FPCore (d1 d2 d3) :precision binary64 (* d1 (+ (+ 37.0 d3) d2)))
double code(double d1, double d2, double d3) {
	return d1 * ((37.0 + d3) + d2);
}
module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(d1, d2, d3)
use fmin_fmax_functions
    real(8), intent (in) :: d1
    real(8), intent (in) :: d2
    real(8), intent (in) :: d3
    code = d1 * ((37.0d0 + d3) + d2)
end function
public static double code(double d1, double d2, double d3) {
	return d1 * ((37.0 + d3) + d2);
}
def code(d1, d2, d3):
	return d1 * ((37.0 + d3) + d2)
function code(d1, d2, d3)
	return Float64(d1 * Float64(Float64(37.0 + d3) + d2))
end
function tmp = code(d1, d2, d3)
	tmp = d1 * ((37.0 + d3) + d2);
end
code[d1_, d2_, d3_] := N[(d1 * N[(N[(37.0 + d3), $MachinePrecision] + d2), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
d1 \cdot \left(\left(37 + d3\right) + d2\right)
\end{array}

Reproduce

?
herbie shell --seed 2025127 
(FPCore (d1 d2 d3)
  :name "FastMath dist3"
  :precision binary64

  :alt
  (! :herbie-platform c (* d1 (+ 37 d3 d2)))

  (+ (+ (* d1 d2) (* (+ d3 5.0) d1)) (* d1 32.0)))