
(FPCore (x) :precision binary64 (* 3.0 (+ (- (* (* x 3.0) x) (* x 4.0)) 1.0)))
double code(double x) {
return 3.0 * ((((x * 3.0) * x) - (x * 4.0)) + 1.0);
}
real(8) function code(x)
real(8), intent (in) :: x
code = 3.0d0 * ((((x * 3.0d0) * x) - (x * 4.0d0)) + 1.0d0)
end function
public static double code(double x) {
return 3.0 * ((((x * 3.0) * x) - (x * 4.0)) + 1.0);
}
def code(x): return 3.0 * ((((x * 3.0) * x) - (x * 4.0)) + 1.0)
function code(x) return Float64(3.0 * Float64(Float64(Float64(Float64(x * 3.0) * x) - Float64(x * 4.0)) + 1.0)) end
function tmp = code(x) tmp = 3.0 * ((((x * 3.0) * x) - (x * 4.0)) + 1.0); end
code[x_] := N[(3.0 * N[(N[(N[(N[(x * 3.0), $MachinePrecision] * x), $MachinePrecision] - N[(x * 4.0), $MachinePrecision]), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
3 \cdot \left(\left(\left(x \cdot 3\right) \cdot x - x \cdot 4\right) + 1\right)
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 6 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x) :precision binary64 (* 3.0 (+ (- (* (* x 3.0) x) (* x 4.0)) 1.0)))
double code(double x) {
return 3.0 * ((((x * 3.0) * x) - (x * 4.0)) + 1.0);
}
real(8) function code(x)
real(8), intent (in) :: x
code = 3.0d0 * ((((x * 3.0d0) * x) - (x * 4.0d0)) + 1.0d0)
end function
public static double code(double x) {
return 3.0 * ((((x * 3.0) * x) - (x * 4.0)) + 1.0);
}
def code(x): return 3.0 * ((((x * 3.0) * x) - (x * 4.0)) + 1.0)
function code(x) return Float64(3.0 * Float64(Float64(Float64(Float64(x * 3.0) * x) - Float64(x * 4.0)) + 1.0)) end
function tmp = code(x) tmp = 3.0 * ((((x * 3.0) * x) - (x * 4.0)) + 1.0); end
code[x_] := N[(3.0 * N[(N[(N[(N[(x * 3.0), $MachinePrecision] * x), $MachinePrecision] - N[(x * 4.0), $MachinePrecision]), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
3 \cdot \left(\left(\left(x \cdot 3\right) \cdot x - x \cdot 4\right) + 1\right)
\end{array}
(FPCore (x) :precision binary64 (fma x (- (* x 9.0) 12.0) 3.0))
double code(double x) {
return fma(x, ((x * 9.0) - 12.0), 3.0);
}
function code(x) return fma(x, Float64(Float64(x * 9.0) - 12.0), 3.0) end
code[x_] := N[(x * N[(N[(x * 9.0), $MachinePrecision] - 12.0), $MachinePrecision] + 3.0), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(x, x \cdot 9 - 12, 3\right)
\end{array}
Initial program 99.8%
distribute-rgt-in99.8%
*-commutative99.8%
distribute-lft-out--99.8%
associate-*l*99.8%
metadata-eval99.8%
fma-def99.8%
*-commutative99.8%
*-commutative99.8%
fma-neg99.8%
metadata-eval99.8%
Simplified99.8%
Taylor expanded in x around 0 99.9%
Final simplification99.9%
(FPCore (x) :precision binary64 (* 3.0 (+ 1.0 (- (* x (* x 3.0)) (* x 4.0)))))
double code(double x) {
return 3.0 * (1.0 + ((x * (x * 3.0)) - (x * 4.0)));
}
real(8) function code(x)
real(8), intent (in) :: x
code = 3.0d0 * (1.0d0 + ((x * (x * 3.0d0)) - (x * 4.0d0)))
end function
public static double code(double x) {
return 3.0 * (1.0 + ((x * (x * 3.0)) - (x * 4.0)));
}
def code(x): return 3.0 * (1.0 + ((x * (x * 3.0)) - (x * 4.0)))
function code(x) return Float64(3.0 * Float64(1.0 + Float64(Float64(x * Float64(x * 3.0)) - Float64(x * 4.0)))) end
function tmp = code(x) tmp = 3.0 * (1.0 + ((x * (x * 3.0)) - (x * 4.0))); end
code[x_] := N[(3.0 * N[(1.0 + N[(N[(x * N[(x * 3.0), $MachinePrecision]), $MachinePrecision] - N[(x * 4.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
3 \cdot \left(1 + \left(x \cdot \left(x \cdot 3\right) - x \cdot 4\right)\right)
\end{array}
Initial program 99.8%
Final simplification99.8%
(FPCore (x) :precision binary64 (* 3.0 (+ (* x (* x 3.0)) (- 1.0 (* x 4.0)))))
double code(double x) {
return 3.0 * ((x * (x * 3.0)) + (1.0 - (x * 4.0)));
}
real(8) function code(x)
real(8), intent (in) :: x
code = 3.0d0 * ((x * (x * 3.0d0)) + (1.0d0 - (x * 4.0d0)))
end function
public static double code(double x) {
return 3.0 * ((x * (x * 3.0)) + (1.0 - (x * 4.0)));
}
def code(x): return 3.0 * ((x * (x * 3.0)) + (1.0 - (x * 4.0)))
function code(x) return Float64(3.0 * Float64(Float64(x * Float64(x * 3.0)) + Float64(1.0 - Float64(x * 4.0)))) end
function tmp = code(x) tmp = 3.0 * ((x * (x * 3.0)) + (1.0 - (x * 4.0))); end
code[x_] := N[(3.0 * N[(N[(x * N[(x * 3.0), $MachinePrecision]), $MachinePrecision] + N[(1.0 - N[(x * 4.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
3 \cdot \left(x \cdot \left(x \cdot 3\right) + \left(1 - x \cdot 4\right)\right)
\end{array}
Initial program 99.8%
associate-+l-99.8%
associate-*l*99.8%
Simplified99.8%
Final simplification99.8%
(FPCore (x) :precision binary64 (if (or (<= x -0.56) (not (<= x 0.58))) (* x (+ (* x 9.0) -12.0)) (+ 3.0 (* x -12.0))))
double code(double x) {
double tmp;
if ((x <= -0.56) || !(x <= 0.58)) {
tmp = x * ((x * 9.0) + -12.0);
} else {
tmp = 3.0 + (x * -12.0);
}
return tmp;
}
real(8) function code(x)
real(8), intent (in) :: x
real(8) :: tmp
if ((x <= (-0.56d0)) .or. (.not. (x <= 0.58d0))) then
tmp = x * ((x * 9.0d0) + (-12.0d0))
else
tmp = 3.0d0 + (x * (-12.0d0))
end if
code = tmp
end function
public static double code(double x) {
double tmp;
if ((x <= -0.56) || !(x <= 0.58)) {
tmp = x * ((x * 9.0) + -12.0);
} else {
tmp = 3.0 + (x * -12.0);
}
return tmp;
}
def code(x): tmp = 0 if (x <= -0.56) or not (x <= 0.58): tmp = x * ((x * 9.0) + -12.0) else: tmp = 3.0 + (x * -12.0) return tmp
function code(x) tmp = 0.0 if ((x <= -0.56) || !(x <= 0.58)) tmp = Float64(x * Float64(Float64(x * 9.0) + -12.0)); else tmp = Float64(3.0 + Float64(x * -12.0)); end return tmp end
function tmp_2 = code(x) tmp = 0.0; if ((x <= -0.56) || ~((x <= 0.58))) tmp = x * ((x * 9.0) + -12.0); else tmp = 3.0 + (x * -12.0); end tmp_2 = tmp; end
code[x_] := If[Or[LessEqual[x, -0.56], N[Not[LessEqual[x, 0.58]], $MachinePrecision]], N[(x * N[(N[(x * 9.0), $MachinePrecision] + -12.0), $MachinePrecision]), $MachinePrecision], N[(3.0 + N[(x * -12.0), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -0.56 \lor \neg \left(x \leq 0.58\right):\\
\;\;\;\;x \cdot \left(x \cdot 9 + -12\right)\\
\mathbf{else}:\\
\;\;\;\;3 + x \cdot -12\\
\end{array}
\end{array}
if x < -0.56000000000000005 or 0.57999999999999996 < x Initial program 99.6%
associate-+l-99.6%
associate-*l*99.6%
Simplified99.6%
Taylor expanded in x around inf 97.8%
unpow297.8%
associate-*r*97.7%
*-commutative97.7%
distribute-rgt-in97.7%
+-commutative97.7%
*-commutative97.7%
fma-udef97.7%
Simplified97.7%
fma-udef97.7%
distribute-rgt-in97.7%
*-commutative97.7%
Applied egg-rr97.7%
Taylor expanded in x around 0 97.8%
*-commutative97.8%
Simplified97.8%
Taylor expanded in x around 0 97.8%
+-commutative97.8%
*-commutative97.8%
*-commutative97.8%
unpow297.8%
associate-*r*97.8%
*-commutative97.8%
distribute-lft-out97.8%
*-commutative97.8%
Simplified97.8%
if -0.56000000000000005 < x < 0.57999999999999996Initial program 99.9%
associate-+l-100.0%
associate-*l*100.0%
Simplified100.0%
Taylor expanded in x around 0 98.4%
*-commutative98.4%
Simplified98.4%
Final simplification98.1%
(FPCore (x) :precision binary64 (+ 3.0 (* x -12.0)))
double code(double x) {
return 3.0 + (x * -12.0);
}
real(8) function code(x)
real(8), intent (in) :: x
code = 3.0d0 + (x * (-12.0d0))
end function
public static double code(double x) {
return 3.0 + (x * -12.0);
}
def code(x): return 3.0 + (x * -12.0)
function code(x) return Float64(3.0 + Float64(x * -12.0)) end
function tmp = code(x) tmp = 3.0 + (x * -12.0); end
code[x_] := N[(3.0 + N[(x * -12.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
3 + x \cdot -12
\end{array}
Initial program 99.8%
associate-+l-99.8%
associate-*l*99.8%
Simplified99.8%
Taylor expanded in x around 0 49.7%
*-commutative49.7%
Simplified49.7%
Final simplification49.7%
(FPCore (x) :precision binary64 3.0)
double code(double x) {
return 3.0;
}
real(8) function code(x)
real(8), intent (in) :: x
code = 3.0d0
end function
public static double code(double x) {
return 3.0;
}
def code(x): return 3.0
function code(x) return 3.0 end
function tmp = code(x) tmp = 3.0; end
code[x_] := 3.0
\begin{array}{l}
\\
3
\end{array}
Initial program 99.8%
associate-+l-99.8%
associate-*l*99.8%
Simplified99.8%
Taylor expanded in x around 0 49.4%
Final simplification49.4%
(FPCore (x) :precision binary64 (+ 3.0 (- (* (* 9.0 x) x) (* 12.0 x))))
double code(double x) {
return 3.0 + (((9.0 * x) * x) - (12.0 * x));
}
real(8) function code(x)
real(8), intent (in) :: x
code = 3.0d0 + (((9.0d0 * x) * x) - (12.0d0 * x))
end function
public static double code(double x) {
return 3.0 + (((9.0 * x) * x) - (12.0 * x));
}
def code(x): return 3.0 + (((9.0 * x) * x) - (12.0 * x))
function code(x) return Float64(3.0 + Float64(Float64(Float64(9.0 * x) * x) - Float64(12.0 * x))) end
function tmp = code(x) tmp = 3.0 + (((9.0 * x) * x) - (12.0 * x)); end
code[x_] := N[(3.0 + N[(N[(N[(9.0 * x), $MachinePrecision] * x), $MachinePrecision] - N[(12.0 * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
3 + \left(\left(9 \cdot x\right) \cdot x - 12 \cdot x\right)
\end{array}
herbie shell --seed 2023333
(FPCore (x)
:name "Diagrams.Tangent:$catParam from diagrams-lib-1.3.0.3, D"
:precision binary64
:herbie-target
(+ 3.0 (- (* (* 9.0 x) x) (* 12.0 x)))
(* 3.0 (+ (- (* (* x 3.0) x) (* x 4.0)) 1.0)))