
(FPCore (x y z) :precision binary64 (+ (* x y) (* (- x 1.0) z)))
double code(double x, double y, double z) {
return (x * y) + ((x - 1.0) * z);
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = (x * y) + ((x - 1.0d0) * z)
end function
public static double code(double x, double y, double z) {
return (x * y) + ((x - 1.0) * z);
}
def code(x, y, z): return (x * y) + ((x - 1.0) * z)
function code(x, y, z) return Float64(Float64(x * y) + Float64(Float64(x - 1.0) * z)) end
function tmp = code(x, y, z) tmp = (x * y) + ((x - 1.0) * z); end
code[x_, y_, z_] := N[(N[(x * y), $MachinePrecision] + N[(N[(x - 1.0), $MachinePrecision] * z), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot y + \left(x - 1\right) \cdot z
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 6 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y z) :precision binary64 (+ (* x y) (* (- x 1.0) z)))
double code(double x, double y, double z) {
return (x * y) + ((x - 1.0) * z);
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = (x * y) + ((x - 1.0d0) * z)
end function
public static double code(double x, double y, double z) {
return (x * y) + ((x - 1.0) * z);
}
def code(x, y, z): return (x * y) + ((x - 1.0) * z)
function code(x, y, z) return Float64(Float64(x * y) + Float64(Float64(x - 1.0) * z)) end
function tmp = code(x, y, z) tmp = (x * y) + ((x - 1.0) * z); end
code[x_, y_, z_] := N[(N[(x * y), $MachinePrecision] + N[(N[(x - 1.0), $MachinePrecision] * z), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot y + \left(x - 1\right) \cdot z
\end{array}
(FPCore (x y z) :precision binary64 (- (* x (+ y z)) z))
double code(double x, double y, double z) {
return (x * (y + z)) - z;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = (x * (y + z)) - z
end function
public static double code(double x, double y, double z) {
return (x * (y + z)) - z;
}
def code(x, y, z): return (x * (y + z)) - z
function code(x, y, z) return Float64(Float64(x * Float64(y + z)) - z) end
function tmp = code(x, y, z) tmp = (x * (y + z)) - z; end
code[x_, y_, z_] := N[(N[(x * N[(y + z), $MachinePrecision]), $MachinePrecision] - z), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \left(y + z\right) - z
\end{array}
Initial program 97.2%
*-commutative97.2%
sub-neg97.2%
distribute-rgt-in97.2%
metadata-eval97.2%
neg-mul-197.2%
associate-+r+97.2%
unsub-neg97.2%
distribute-lft-out100.0%
Simplified100.0%
(FPCore (x y z)
:precision binary64
(if (<= x -1.65e+37)
(* x z)
(if (<= x -4.2e-36)
(* x y)
(if (<= x 5e-39) (- z) (if (<= x 2.55e+182) (* x y) (* x z))))))
double code(double x, double y, double z) {
double tmp;
if (x <= -1.65e+37) {
tmp = x * z;
} else if (x <= -4.2e-36) {
tmp = x * y;
} else if (x <= 5e-39) {
tmp = -z;
} else if (x <= 2.55e+182) {
tmp = x * y;
} else {
tmp = x * z;
}
return tmp;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8) :: tmp
if (x <= (-1.65d+37)) then
tmp = x * z
else if (x <= (-4.2d-36)) then
tmp = x * y
else if (x <= 5d-39) then
tmp = -z
else if (x <= 2.55d+182) then
tmp = x * y
else
tmp = x * z
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (x <= -1.65e+37) {
tmp = x * z;
} else if (x <= -4.2e-36) {
tmp = x * y;
} else if (x <= 5e-39) {
tmp = -z;
} else if (x <= 2.55e+182) {
tmp = x * y;
} else {
tmp = x * z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if x <= -1.65e+37: tmp = x * z elif x <= -4.2e-36: tmp = x * y elif x <= 5e-39: tmp = -z elif x <= 2.55e+182: tmp = x * y else: tmp = x * z return tmp
function code(x, y, z) tmp = 0.0 if (x <= -1.65e+37) tmp = Float64(x * z); elseif (x <= -4.2e-36) tmp = Float64(x * y); elseif (x <= 5e-39) tmp = Float64(-z); elseif (x <= 2.55e+182) tmp = Float64(x * y); else tmp = Float64(x * z); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (x <= -1.65e+37) tmp = x * z; elseif (x <= -4.2e-36) tmp = x * y; elseif (x <= 5e-39) tmp = -z; elseif (x <= 2.55e+182) tmp = x * y; else tmp = x * z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[x, -1.65e+37], N[(x * z), $MachinePrecision], If[LessEqual[x, -4.2e-36], N[(x * y), $MachinePrecision], If[LessEqual[x, 5e-39], (-z), If[LessEqual[x, 2.55e+182], N[(x * y), $MachinePrecision], N[(x * z), $MachinePrecision]]]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -1.65 \cdot 10^{+37}:\\
\;\;\;\;x \cdot z\\
\mathbf{elif}\;x \leq -4.2 \cdot 10^{-36}:\\
\;\;\;\;x \cdot y\\
\mathbf{elif}\;x \leq 5 \cdot 10^{-39}:\\
\;\;\;\;-z\\
\mathbf{elif}\;x \leq 2.55 \cdot 10^{+182}:\\
\;\;\;\;x \cdot y\\
\mathbf{else}:\\
\;\;\;\;x \cdot z\\
\end{array}
\end{array}
if x < -1.65e37 or 2.55000000000000005e182 < x Initial program 92.6%
Taylor expanded in x around inf 100.0%
+-commutative100.0%
Simplified100.0%
Taylor expanded in z around inf 67.5%
if -1.65e37 < x < -4.19999999999999982e-36 or 4.9999999999999998e-39 < x < 2.55000000000000005e182Initial program 98.7%
Taylor expanded in y around inf 60.6%
if -4.19999999999999982e-36 < x < 4.9999999999999998e-39Initial program 100.0%
Taylor expanded in x around 0 75.7%
neg-mul-175.7%
Simplified75.7%
(FPCore (x y z) :precision binary64 (if (or (<= x -30.5) (not (<= x 1.0))) (* x (+ y z)) (- (* x y) z)))
double code(double x, double y, double z) {
double tmp;
if ((x <= -30.5) || !(x <= 1.0)) {
tmp = x * (y + z);
} else {
tmp = (x * y) - z;
}
return tmp;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8) :: tmp
if ((x <= (-30.5d0)) .or. (.not. (x <= 1.0d0))) then
tmp = x * (y + z)
else
tmp = (x * y) - z
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((x <= -30.5) || !(x <= 1.0)) {
tmp = x * (y + z);
} else {
tmp = (x * y) - z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (x <= -30.5) or not (x <= 1.0): tmp = x * (y + z) else: tmp = (x * y) - z return tmp
function code(x, y, z) tmp = 0.0 if ((x <= -30.5) || !(x <= 1.0)) tmp = Float64(x * Float64(y + z)); else tmp = Float64(Float64(x * y) - z); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((x <= -30.5) || ~((x <= 1.0))) tmp = x * (y + z); else tmp = (x * y) - z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[x, -30.5], N[Not[LessEqual[x, 1.0]], $MachinePrecision]], N[(x * N[(y + z), $MachinePrecision]), $MachinePrecision], N[(N[(x * y), $MachinePrecision] - z), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -30.5 \lor \neg \left(x \leq 1\right):\\
\;\;\;\;x \cdot \left(y + z\right)\\
\mathbf{else}:\\
\;\;\;\;x \cdot y - z\\
\end{array}
\end{array}
if x < -30.5 or 1 < x Initial program 94.5%
Taylor expanded in x around inf 99.1%
+-commutative99.1%
Simplified99.1%
if -30.5 < x < 1Initial program 100.0%
*-commutative100.0%
sub-neg100.0%
distribute-rgt-in100.0%
metadata-eval100.0%
neg-mul-1100.0%
associate-+r+100.0%
unsub-neg100.0%
distribute-lft-out100.0%
Simplified100.0%
Taylor expanded in y around inf 98.1%
Final simplification98.6%
(FPCore (x y z) :precision binary64 (if (or (<= x -9e-37) (not (<= x 4.6e-38))) (* x (+ y z)) (- z)))
double code(double x, double y, double z) {
double tmp;
if ((x <= -9e-37) || !(x <= 4.6e-38)) {
tmp = x * (y + z);
} else {
tmp = -z;
}
return tmp;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8) :: tmp
if ((x <= (-9d-37)) .or. (.not. (x <= 4.6d-38))) then
tmp = x * (y + z)
else
tmp = -z
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((x <= -9e-37) || !(x <= 4.6e-38)) {
tmp = x * (y + z);
} else {
tmp = -z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (x <= -9e-37) or not (x <= 4.6e-38): tmp = x * (y + z) else: tmp = -z return tmp
function code(x, y, z) tmp = 0.0 if ((x <= -9e-37) || !(x <= 4.6e-38)) tmp = Float64(x * Float64(y + z)); else tmp = Float64(-z); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((x <= -9e-37) || ~((x <= 4.6e-38))) tmp = x * (y + z); else tmp = -z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[x, -9e-37], N[Not[LessEqual[x, 4.6e-38]], $MachinePrecision]], N[(x * N[(y + z), $MachinePrecision]), $MachinePrecision], (-z)]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -9 \cdot 10^{-37} \lor \neg \left(x \leq 4.6 \cdot 10^{-38}\right):\\
\;\;\;\;x \cdot \left(y + z\right)\\
\mathbf{else}:\\
\;\;\;\;-z\\
\end{array}
\end{array}
if x < -9.00000000000000081e-37 or 4.60000000000000003e-38 < x Initial program 95.5%
Taylor expanded in x around inf 92.7%
+-commutative92.7%
Simplified92.7%
if -9.00000000000000081e-37 < x < 4.60000000000000003e-38Initial program 100.0%
Taylor expanded in x around 0 75.7%
neg-mul-175.7%
Simplified75.7%
Final simplification86.1%
(FPCore (x y z) :precision binary64 (if (or (<= x -2e-36) (not (<= x 1.75e-38))) (* x y) (- z)))
double code(double x, double y, double z) {
double tmp;
if ((x <= -2e-36) || !(x <= 1.75e-38)) {
tmp = x * y;
} else {
tmp = -z;
}
return tmp;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8) :: tmp
if ((x <= (-2d-36)) .or. (.not. (x <= 1.75d-38))) then
tmp = x * y
else
tmp = -z
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((x <= -2e-36) || !(x <= 1.75e-38)) {
tmp = x * y;
} else {
tmp = -z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (x <= -2e-36) or not (x <= 1.75e-38): tmp = x * y else: tmp = -z return tmp
function code(x, y, z) tmp = 0.0 if ((x <= -2e-36) || !(x <= 1.75e-38)) tmp = Float64(x * y); else tmp = Float64(-z); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((x <= -2e-36) || ~((x <= 1.75e-38))) tmp = x * y; else tmp = -z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[x, -2e-36], N[Not[LessEqual[x, 1.75e-38]], $MachinePrecision]], N[(x * y), $MachinePrecision], (-z)]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -2 \cdot 10^{-36} \lor \neg \left(x \leq 1.75 \cdot 10^{-38}\right):\\
\;\;\;\;x \cdot y\\
\mathbf{else}:\\
\;\;\;\;-z\\
\end{array}
\end{array}
if x < -1.9999999999999999e-36 or 1.7500000000000001e-38 < x Initial program 95.5%
Taylor expanded in y around inf 48.9%
if -1.9999999999999999e-36 < x < 1.7500000000000001e-38Initial program 100.0%
Taylor expanded in x around 0 75.7%
neg-mul-175.7%
Simplified75.7%
Final simplification59.2%
(FPCore (x y z) :precision binary64 (- z))
double code(double x, double y, double z) {
return -z;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = -z
end function
public static double code(double x, double y, double z) {
return -z;
}
def code(x, y, z): return -z
function code(x, y, z) return Float64(-z) end
function tmp = code(x, y, z) tmp = -z; end
code[x_, y_, z_] := (-z)
\begin{array}{l}
\\
-z
\end{array}
Initial program 97.2%
Taylor expanded in x around 0 34.3%
neg-mul-134.3%
Simplified34.3%
herbie shell --seed 2024186
(FPCore (x y z)
:name "Graphics.Rendering.Chart.Drawing:drawTextsR from Chart-1.5.3"
:precision binary64
(+ (* x y) (* (- x 1.0) z)))