
(FPCore (x) :precision binary64 (- (sin x) x))
double code(double x) {
return sin(x) - x;
}
real(8) function code(x)
real(8), intent (in) :: x
code = sin(x) - x
end function
public static double code(double x) {
return Math.sin(x) - x;
}
def code(x): return math.sin(x) - x
function code(x) return Float64(sin(x) - x) end
function tmp = code(x) tmp = sin(x) - x; end
code[x_] := N[(N[Sin[x], $MachinePrecision] - x), $MachinePrecision]
\begin{array}{l}
\\
\sin x - x
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 8 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x) :precision binary64 (- (sin x) x))
double code(double x) {
return sin(x) - x;
}
real(8) function code(x)
real(8), intent (in) :: x
code = sin(x) - x
end function
public static double code(double x) {
return Math.sin(x) - x;
}
def code(x): return math.sin(x) - x
function code(x) return Float64(sin(x) - x) end
function tmp = code(x) tmp = sin(x) - x; end
code[x_] := N[(N[Sin[x], $MachinePrecision] - x), $MachinePrecision]
\begin{array}{l}
\\
\sin x - x
\end{array}
x_m = (fabs.f64 x)
x_s = (copysign.f64 1 x)
(FPCore (x_s x_m)
:precision binary64
(let* ((t_0 (- (sin x_m) x_m)))
(*
x_s
(if (<= t_0 -0.1)
t_0
(+
(* -0.16666666666666666 (pow x_m 3.0))
(+
(* -0.0001984126984126984 (pow x_m 7.0))
(* 0.008333333333333333 (pow x_m 5.0))))))))x_m = fabs(x);
x_s = copysign(1.0, x);
double code(double x_s, double x_m) {
double t_0 = sin(x_m) - x_m;
double tmp;
if (t_0 <= -0.1) {
tmp = t_0;
} else {
tmp = (-0.16666666666666666 * pow(x_m, 3.0)) + ((-0.0001984126984126984 * pow(x_m, 7.0)) + (0.008333333333333333 * pow(x_m, 5.0)));
}
return x_s * tmp;
}
x_m = abs(x)
x_s = copysign(1.0d0, x)
real(8) function code(x_s, x_m)
real(8), intent (in) :: x_s
real(8), intent (in) :: x_m
real(8) :: t_0
real(8) :: tmp
t_0 = sin(x_m) - x_m
if (t_0 <= (-0.1d0)) then
tmp = t_0
else
tmp = ((-0.16666666666666666d0) * (x_m ** 3.0d0)) + (((-0.0001984126984126984d0) * (x_m ** 7.0d0)) + (0.008333333333333333d0 * (x_m ** 5.0d0)))
end if
code = x_s * tmp
end function
x_m = Math.abs(x);
x_s = Math.copySign(1.0, x);
public static double code(double x_s, double x_m) {
double t_0 = Math.sin(x_m) - x_m;
double tmp;
if (t_0 <= -0.1) {
tmp = t_0;
} else {
tmp = (-0.16666666666666666 * Math.pow(x_m, 3.0)) + ((-0.0001984126984126984 * Math.pow(x_m, 7.0)) + (0.008333333333333333 * Math.pow(x_m, 5.0)));
}
return x_s * tmp;
}
x_m = math.fabs(x) x_s = math.copysign(1.0, x) def code(x_s, x_m): t_0 = math.sin(x_m) - x_m tmp = 0 if t_0 <= -0.1: tmp = t_0 else: tmp = (-0.16666666666666666 * math.pow(x_m, 3.0)) + ((-0.0001984126984126984 * math.pow(x_m, 7.0)) + (0.008333333333333333 * math.pow(x_m, 5.0))) return x_s * tmp
x_m = abs(x) x_s = copysign(1.0, x) function code(x_s, x_m) t_0 = Float64(sin(x_m) - x_m) tmp = 0.0 if (t_0 <= -0.1) tmp = t_0; else tmp = Float64(Float64(-0.16666666666666666 * (x_m ^ 3.0)) + Float64(Float64(-0.0001984126984126984 * (x_m ^ 7.0)) + Float64(0.008333333333333333 * (x_m ^ 5.0)))); end return Float64(x_s * tmp) end
x_m = abs(x); x_s = sign(x) * abs(1.0); function tmp_2 = code(x_s, x_m) t_0 = sin(x_m) - x_m; tmp = 0.0; if (t_0 <= -0.1) tmp = t_0; else tmp = (-0.16666666666666666 * (x_m ^ 3.0)) + ((-0.0001984126984126984 * (x_m ^ 7.0)) + (0.008333333333333333 * (x_m ^ 5.0))); end tmp_2 = x_s * tmp; end
x_m = N[Abs[x], $MachinePrecision]
x_s = N[With[{TMP1 = Abs[1.0], TMP2 = Sign[x]}, TMP1 * If[TMP2 == 0, 1, TMP2]], $MachinePrecision]
code[x$95$s_, x$95$m_] := Block[{t$95$0 = N[(N[Sin[x$95$m], $MachinePrecision] - x$95$m), $MachinePrecision]}, N[(x$95$s * If[LessEqual[t$95$0, -0.1], t$95$0, N[(N[(-0.16666666666666666 * N[Power[x$95$m, 3.0], $MachinePrecision]), $MachinePrecision] + N[(N[(-0.0001984126984126984 * N[Power[x$95$m, 7.0], $MachinePrecision]), $MachinePrecision] + N[(0.008333333333333333 * N[Power[x$95$m, 5.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]), $MachinePrecision]]
\begin{array}{l}
x_m = \left|x\right|
\\
x_s = \mathsf{copysign}\left(1, x\right)
\\
\begin{array}{l}
t_0 := \sin x_m - x_m\\
x_s \cdot \begin{array}{l}
\mathbf{if}\;t_0 \leq -0.1:\\
\;\;\;\;t_0\\
\mathbf{else}:\\
\;\;\;\;-0.16666666666666666 \cdot {x_m}^{3} + \left(-0.0001984126984126984 \cdot {x_m}^{7} + 0.008333333333333333 \cdot {x_m}^{5}\right)\\
\end{array}
\end{array}
\end{array}
if (-.f64 (sin.f64 x) x) < -0.10000000000000001Initial program 100.0%
if -0.10000000000000001 < (-.f64 (sin.f64 x) x) Initial program 72.7%
Taylor expanded in x around 0 98.7%
Final simplification98.7%
x_m = (fabs.f64 x)
x_s = (copysign.f64 1 x)
(FPCore (x_s x_m)
:precision binary64
(let* ((t_0 (- (sin x_m) x_m)))
(*
x_s
(if (<= t_0 -0.1)
t_0
(fma
(pow x_m 2.0)
(* x_m -0.16666666666666666)
(* 0.008333333333333333 (pow x_m 5.0)))))))x_m = fabs(x);
x_s = copysign(1.0, x);
double code(double x_s, double x_m) {
double t_0 = sin(x_m) - x_m;
double tmp;
if (t_0 <= -0.1) {
tmp = t_0;
} else {
tmp = fma(pow(x_m, 2.0), (x_m * -0.16666666666666666), (0.008333333333333333 * pow(x_m, 5.0)));
}
return x_s * tmp;
}
x_m = abs(x) x_s = copysign(1.0, x) function code(x_s, x_m) t_0 = Float64(sin(x_m) - x_m) tmp = 0.0 if (t_0 <= -0.1) tmp = t_0; else tmp = fma((x_m ^ 2.0), Float64(x_m * -0.16666666666666666), Float64(0.008333333333333333 * (x_m ^ 5.0))); end return Float64(x_s * tmp) end
x_m = N[Abs[x], $MachinePrecision]
x_s = N[With[{TMP1 = Abs[1.0], TMP2 = Sign[x]}, TMP1 * If[TMP2 == 0, 1, TMP2]], $MachinePrecision]
code[x$95$s_, x$95$m_] := Block[{t$95$0 = N[(N[Sin[x$95$m], $MachinePrecision] - x$95$m), $MachinePrecision]}, N[(x$95$s * If[LessEqual[t$95$0, -0.1], t$95$0, N[(N[Power[x$95$m, 2.0], $MachinePrecision] * N[(x$95$m * -0.16666666666666666), $MachinePrecision] + N[(0.008333333333333333 * N[Power[x$95$m, 5.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]), $MachinePrecision]]
\begin{array}{l}
x_m = \left|x\right|
\\
x_s = \mathsf{copysign}\left(1, x\right)
\\
\begin{array}{l}
t_0 := \sin x_m - x_m\\
x_s \cdot \begin{array}{l}
\mathbf{if}\;t_0 \leq -0.1:\\
\;\;\;\;t_0\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left({x_m}^{2}, x_m \cdot -0.16666666666666666, 0.008333333333333333 \cdot {x_m}^{5}\right)\\
\end{array}
\end{array}
\end{array}
if (-.f64 (sin.f64 x) x) < -0.10000000000000001Initial program 100.0%
if -0.10000000000000001 < (-.f64 (sin.f64 x) x) Initial program 72.7%
Taylor expanded in x around 0 98.3%
*-commutative98.3%
unpow398.3%
associate-*l*98.3%
fma-def98.3%
pow298.3%
Applied egg-rr98.3%
Final simplification98.4%
x_m = (fabs.f64 x)
x_s = (copysign.f64 1 x)
(FPCore (x_s x_m)
:precision binary64
(let* ((t_0 (- (sin x_m) x_m)))
(*
x_s
(if (<= t_0 -0.1)
t_0
(+
(* -0.16666666666666666 (pow x_m 3.0))
(* 0.008333333333333333 (pow x_m 5.0)))))))x_m = fabs(x);
x_s = copysign(1.0, x);
double code(double x_s, double x_m) {
double t_0 = sin(x_m) - x_m;
double tmp;
if (t_0 <= -0.1) {
tmp = t_0;
} else {
tmp = (-0.16666666666666666 * pow(x_m, 3.0)) + (0.008333333333333333 * pow(x_m, 5.0));
}
return x_s * tmp;
}
x_m = abs(x)
x_s = copysign(1.0d0, x)
real(8) function code(x_s, x_m)
real(8), intent (in) :: x_s
real(8), intent (in) :: x_m
real(8) :: t_0
real(8) :: tmp
t_0 = sin(x_m) - x_m
if (t_0 <= (-0.1d0)) then
tmp = t_0
else
tmp = ((-0.16666666666666666d0) * (x_m ** 3.0d0)) + (0.008333333333333333d0 * (x_m ** 5.0d0))
end if
code = x_s * tmp
end function
x_m = Math.abs(x);
x_s = Math.copySign(1.0, x);
public static double code(double x_s, double x_m) {
double t_0 = Math.sin(x_m) - x_m;
double tmp;
if (t_0 <= -0.1) {
tmp = t_0;
} else {
tmp = (-0.16666666666666666 * Math.pow(x_m, 3.0)) + (0.008333333333333333 * Math.pow(x_m, 5.0));
}
return x_s * tmp;
}
x_m = math.fabs(x) x_s = math.copysign(1.0, x) def code(x_s, x_m): t_0 = math.sin(x_m) - x_m tmp = 0 if t_0 <= -0.1: tmp = t_0 else: tmp = (-0.16666666666666666 * math.pow(x_m, 3.0)) + (0.008333333333333333 * math.pow(x_m, 5.0)) return x_s * tmp
x_m = abs(x) x_s = copysign(1.0, x) function code(x_s, x_m) t_0 = Float64(sin(x_m) - x_m) tmp = 0.0 if (t_0 <= -0.1) tmp = t_0; else tmp = Float64(Float64(-0.16666666666666666 * (x_m ^ 3.0)) + Float64(0.008333333333333333 * (x_m ^ 5.0))); end return Float64(x_s * tmp) end
x_m = abs(x); x_s = sign(x) * abs(1.0); function tmp_2 = code(x_s, x_m) t_0 = sin(x_m) - x_m; tmp = 0.0; if (t_0 <= -0.1) tmp = t_0; else tmp = (-0.16666666666666666 * (x_m ^ 3.0)) + (0.008333333333333333 * (x_m ^ 5.0)); end tmp_2 = x_s * tmp; end
x_m = N[Abs[x], $MachinePrecision]
x_s = N[With[{TMP1 = Abs[1.0], TMP2 = Sign[x]}, TMP1 * If[TMP2 == 0, 1, TMP2]], $MachinePrecision]
code[x$95$s_, x$95$m_] := Block[{t$95$0 = N[(N[Sin[x$95$m], $MachinePrecision] - x$95$m), $MachinePrecision]}, N[(x$95$s * If[LessEqual[t$95$0, -0.1], t$95$0, N[(N[(-0.16666666666666666 * N[Power[x$95$m, 3.0], $MachinePrecision]), $MachinePrecision] + N[(0.008333333333333333 * N[Power[x$95$m, 5.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]), $MachinePrecision]]
\begin{array}{l}
x_m = \left|x\right|
\\
x_s = \mathsf{copysign}\left(1, x\right)
\\
\begin{array}{l}
t_0 := \sin x_m - x_m\\
x_s \cdot \begin{array}{l}
\mathbf{if}\;t_0 \leq -0.1:\\
\;\;\;\;t_0\\
\mathbf{else}:\\
\;\;\;\;-0.16666666666666666 \cdot {x_m}^{3} + 0.008333333333333333 \cdot {x_m}^{5}\\
\end{array}
\end{array}
\end{array}
if (-.f64 (sin.f64 x) x) < -0.10000000000000001Initial program 100.0%
if -0.10000000000000001 < (-.f64 (sin.f64 x) x) Initial program 72.7%
Taylor expanded in x around 0 98.3%
Final simplification98.3%
x_m = (fabs.f64 x)
x_s = (copysign.f64 1 x)
(FPCore (x_s x_m)
:precision binary64
(let* ((t_0 (- (sin x_m) x_m)))
(*
x_s
(if (<= t_0 -2e-10) t_0 (* (pow x_m 2.0) (* x_m -0.16666666666666666))))))x_m = fabs(x);
x_s = copysign(1.0, x);
double code(double x_s, double x_m) {
double t_0 = sin(x_m) - x_m;
double tmp;
if (t_0 <= -2e-10) {
tmp = t_0;
} else {
tmp = pow(x_m, 2.0) * (x_m * -0.16666666666666666);
}
return x_s * tmp;
}
x_m = abs(x)
x_s = copysign(1.0d0, x)
real(8) function code(x_s, x_m)
real(8), intent (in) :: x_s
real(8), intent (in) :: x_m
real(8) :: t_0
real(8) :: tmp
t_0 = sin(x_m) - x_m
if (t_0 <= (-2d-10)) then
tmp = t_0
else
tmp = (x_m ** 2.0d0) * (x_m * (-0.16666666666666666d0))
end if
code = x_s * tmp
end function
x_m = Math.abs(x);
x_s = Math.copySign(1.0, x);
public static double code(double x_s, double x_m) {
double t_0 = Math.sin(x_m) - x_m;
double tmp;
if (t_0 <= -2e-10) {
tmp = t_0;
} else {
tmp = Math.pow(x_m, 2.0) * (x_m * -0.16666666666666666);
}
return x_s * tmp;
}
x_m = math.fabs(x) x_s = math.copysign(1.0, x) def code(x_s, x_m): t_0 = math.sin(x_m) - x_m tmp = 0 if t_0 <= -2e-10: tmp = t_0 else: tmp = math.pow(x_m, 2.0) * (x_m * -0.16666666666666666) return x_s * tmp
x_m = abs(x) x_s = copysign(1.0, x) function code(x_s, x_m) t_0 = Float64(sin(x_m) - x_m) tmp = 0.0 if (t_0 <= -2e-10) tmp = t_0; else tmp = Float64((x_m ^ 2.0) * Float64(x_m * -0.16666666666666666)); end return Float64(x_s * tmp) end
x_m = abs(x); x_s = sign(x) * abs(1.0); function tmp_2 = code(x_s, x_m) t_0 = sin(x_m) - x_m; tmp = 0.0; if (t_0 <= -2e-10) tmp = t_0; else tmp = (x_m ^ 2.0) * (x_m * -0.16666666666666666); end tmp_2 = x_s * tmp; end
x_m = N[Abs[x], $MachinePrecision]
x_s = N[With[{TMP1 = Abs[1.0], TMP2 = Sign[x]}, TMP1 * If[TMP2 == 0, 1, TMP2]], $MachinePrecision]
code[x$95$s_, x$95$m_] := Block[{t$95$0 = N[(N[Sin[x$95$m], $MachinePrecision] - x$95$m), $MachinePrecision]}, N[(x$95$s * If[LessEqual[t$95$0, -2e-10], t$95$0, N[(N[Power[x$95$m, 2.0], $MachinePrecision] * N[(x$95$m * -0.16666666666666666), $MachinePrecision]), $MachinePrecision]]), $MachinePrecision]]
\begin{array}{l}
x_m = \left|x\right|
\\
x_s = \mathsf{copysign}\left(1, x\right)
\\
\begin{array}{l}
t_0 := \sin x_m - x_m\\
x_s \cdot \begin{array}{l}
\mathbf{if}\;t_0 \leq -2 \cdot 10^{-10}:\\
\;\;\;\;t_0\\
\mathbf{else}:\\
\;\;\;\;{x_m}^{2} \cdot \left(x_m \cdot -0.16666666666666666\right)\\
\end{array}
\end{array}
\end{array}
if (-.f64 (sin.f64 x) x) < -2.00000000000000007e-10Initial program 94.9%
if -2.00000000000000007e-10 < (-.f64 (sin.f64 x) x) Initial program 72.7%
Taylor expanded in x around 0 97.9%
add-cube-cbrt97.4%
pow397.4%
*-commutative97.4%
cbrt-prod97.0%
rem-cbrt-cube97.1%
Applied egg-rr97.1%
unpow-prod-down97.1%
unpow397.1%
unpow297.1%
rem-cube-cbrt97.9%
associate-*r*97.9%
Applied egg-rr97.9%
Final simplification97.8%
x_m = (fabs.f64 x) x_s = (copysign.f64 1 x) (FPCore (x_s x_m) :precision binary64 (let* ((t_0 (- (sin x_m) x_m))) (* x_s (if (<= t_0 -2e-10) t_0 (* -0.16666666666666666 (pow x_m 3.0))))))
x_m = fabs(x);
x_s = copysign(1.0, x);
double code(double x_s, double x_m) {
double t_0 = sin(x_m) - x_m;
double tmp;
if (t_0 <= -2e-10) {
tmp = t_0;
} else {
tmp = -0.16666666666666666 * pow(x_m, 3.0);
}
return x_s * tmp;
}
x_m = abs(x)
x_s = copysign(1.0d0, x)
real(8) function code(x_s, x_m)
real(8), intent (in) :: x_s
real(8), intent (in) :: x_m
real(8) :: t_0
real(8) :: tmp
t_0 = sin(x_m) - x_m
if (t_0 <= (-2d-10)) then
tmp = t_0
else
tmp = (-0.16666666666666666d0) * (x_m ** 3.0d0)
end if
code = x_s * tmp
end function
x_m = Math.abs(x);
x_s = Math.copySign(1.0, x);
public static double code(double x_s, double x_m) {
double t_0 = Math.sin(x_m) - x_m;
double tmp;
if (t_0 <= -2e-10) {
tmp = t_0;
} else {
tmp = -0.16666666666666666 * Math.pow(x_m, 3.0);
}
return x_s * tmp;
}
x_m = math.fabs(x) x_s = math.copysign(1.0, x) def code(x_s, x_m): t_0 = math.sin(x_m) - x_m tmp = 0 if t_0 <= -2e-10: tmp = t_0 else: tmp = -0.16666666666666666 * math.pow(x_m, 3.0) return x_s * tmp
x_m = abs(x) x_s = copysign(1.0, x) function code(x_s, x_m) t_0 = Float64(sin(x_m) - x_m) tmp = 0.0 if (t_0 <= -2e-10) tmp = t_0; else tmp = Float64(-0.16666666666666666 * (x_m ^ 3.0)); end return Float64(x_s * tmp) end
x_m = abs(x); x_s = sign(x) * abs(1.0); function tmp_2 = code(x_s, x_m) t_0 = sin(x_m) - x_m; tmp = 0.0; if (t_0 <= -2e-10) tmp = t_0; else tmp = -0.16666666666666666 * (x_m ^ 3.0); end tmp_2 = x_s * tmp; end
x_m = N[Abs[x], $MachinePrecision]
x_s = N[With[{TMP1 = Abs[1.0], TMP2 = Sign[x]}, TMP1 * If[TMP2 == 0, 1, TMP2]], $MachinePrecision]
code[x$95$s_, x$95$m_] := Block[{t$95$0 = N[(N[Sin[x$95$m], $MachinePrecision] - x$95$m), $MachinePrecision]}, N[(x$95$s * If[LessEqual[t$95$0, -2e-10], t$95$0, N[(-0.16666666666666666 * N[Power[x$95$m, 3.0], $MachinePrecision]), $MachinePrecision]]), $MachinePrecision]]
\begin{array}{l}
x_m = \left|x\right|
\\
x_s = \mathsf{copysign}\left(1, x\right)
\\
\begin{array}{l}
t_0 := \sin x_m - x_m\\
x_s \cdot \begin{array}{l}
\mathbf{if}\;t_0 \leq -2 \cdot 10^{-10}:\\
\;\;\;\;t_0\\
\mathbf{else}:\\
\;\;\;\;-0.16666666666666666 \cdot {x_m}^{3}\\
\end{array}
\end{array}
\end{array}
if (-.f64 (sin.f64 x) x) < -2.00000000000000007e-10Initial program 94.9%
if -2.00000000000000007e-10 < (-.f64 (sin.f64 x) x) Initial program 72.7%
Taylor expanded in x around 0 97.9%
Final simplification97.8%
x_m = (fabs.f64 x)
x_s = (copysign.f64 1 x)
(FPCore (x_s x_m)
:precision binary64
(let* ((t_0 (- (sin x_m) x_m)))
(*
x_s
(if (<= t_0 -2e-10) t_0 (* x_m (* x_m (* x_m -0.16666666666666666)))))))x_m = fabs(x);
x_s = copysign(1.0, x);
double code(double x_s, double x_m) {
double t_0 = sin(x_m) - x_m;
double tmp;
if (t_0 <= -2e-10) {
tmp = t_0;
} else {
tmp = x_m * (x_m * (x_m * -0.16666666666666666));
}
return x_s * tmp;
}
x_m = abs(x)
x_s = copysign(1.0d0, x)
real(8) function code(x_s, x_m)
real(8), intent (in) :: x_s
real(8), intent (in) :: x_m
real(8) :: t_0
real(8) :: tmp
t_0 = sin(x_m) - x_m
if (t_0 <= (-2d-10)) then
tmp = t_0
else
tmp = x_m * (x_m * (x_m * (-0.16666666666666666d0)))
end if
code = x_s * tmp
end function
x_m = Math.abs(x);
x_s = Math.copySign(1.0, x);
public static double code(double x_s, double x_m) {
double t_0 = Math.sin(x_m) - x_m;
double tmp;
if (t_0 <= -2e-10) {
tmp = t_0;
} else {
tmp = x_m * (x_m * (x_m * -0.16666666666666666));
}
return x_s * tmp;
}
x_m = math.fabs(x) x_s = math.copysign(1.0, x) def code(x_s, x_m): t_0 = math.sin(x_m) - x_m tmp = 0 if t_0 <= -2e-10: tmp = t_0 else: tmp = x_m * (x_m * (x_m * -0.16666666666666666)) return x_s * tmp
x_m = abs(x) x_s = copysign(1.0, x) function code(x_s, x_m) t_0 = Float64(sin(x_m) - x_m) tmp = 0.0 if (t_0 <= -2e-10) tmp = t_0; else tmp = Float64(x_m * Float64(x_m * Float64(x_m * -0.16666666666666666))); end return Float64(x_s * tmp) end
x_m = abs(x); x_s = sign(x) * abs(1.0); function tmp_2 = code(x_s, x_m) t_0 = sin(x_m) - x_m; tmp = 0.0; if (t_0 <= -2e-10) tmp = t_0; else tmp = x_m * (x_m * (x_m * -0.16666666666666666)); end tmp_2 = x_s * tmp; end
x_m = N[Abs[x], $MachinePrecision]
x_s = N[With[{TMP1 = Abs[1.0], TMP2 = Sign[x]}, TMP1 * If[TMP2 == 0, 1, TMP2]], $MachinePrecision]
code[x$95$s_, x$95$m_] := Block[{t$95$0 = N[(N[Sin[x$95$m], $MachinePrecision] - x$95$m), $MachinePrecision]}, N[(x$95$s * If[LessEqual[t$95$0, -2e-10], t$95$0, N[(x$95$m * N[(x$95$m * N[(x$95$m * -0.16666666666666666), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]), $MachinePrecision]]
\begin{array}{l}
x_m = \left|x\right|
\\
x_s = \mathsf{copysign}\left(1, x\right)
\\
\begin{array}{l}
t_0 := \sin x_m - x_m\\
x_s \cdot \begin{array}{l}
\mathbf{if}\;t_0 \leq -2 \cdot 10^{-10}:\\
\;\;\;\;t_0\\
\mathbf{else}:\\
\;\;\;\;x_m \cdot \left(x_m \cdot \left(x_m \cdot -0.16666666666666666\right)\right)\\
\end{array}
\end{array}
\end{array}
if (-.f64 (sin.f64 x) x) < -2.00000000000000007e-10Initial program 94.9%
if -2.00000000000000007e-10 < (-.f64 (sin.f64 x) x) Initial program 72.7%
Taylor expanded in x around 0 97.9%
add-cube-cbrt97.4%
pow397.4%
*-commutative97.4%
cbrt-prod97.0%
rem-cbrt-cube97.1%
Applied egg-rr97.1%
unpow-prod-down97.1%
unpow397.1%
unpow297.1%
rem-cube-cbrt97.9%
associate-*r*97.9%
unpow297.9%
associate-*l*97.8%
Applied egg-rr97.8%
Final simplification97.8%
x_m = (fabs.f64 x) x_s = (copysign.f64 1 x) (FPCore (x_s x_m) :precision binary64 (* x_s (* x_m (* x_m (* x_m -0.16666666666666666)))))
x_m = fabs(x);
x_s = copysign(1.0, x);
double code(double x_s, double x_m) {
return x_s * (x_m * (x_m * (x_m * -0.16666666666666666)));
}
x_m = abs(x)
x_s = copysign(1.0d0, x)
real(8) function code(x_s, x_m)
real(8), intent (in) :: x_s
real(8), intent (in) :: x_m
code = x_s * (x_m * (x_m * (x_m * (-0.16666666666666666d0))))
end function
x_m = Math.abs(x);
x_s = Math.copySign(1.0, x);
public static double code(double x_s, double x_m) {
return x_s * (x_m * (x_m * (x_m * -0.16666666666666666)));
}
x_m = math.fabs(x) x_s = math.copysign(1.0, x) def code(x_s, x_m): return x_s * (x_m * (x_m * (x_m * -0.16666666666666666)))
x_m = abs(x) x_s = copysign(1.0, x) function code(x_s, x_m) return Float64(x_s * Float64(x_m * Float64(x_m * Float64(x_m * -0.16666666666666666)))) end
x_m = abs(x); x_s = sign(x) * abs(1.0); function tmp = code(x_s, x_m) tmp = x_s * (x_m * (x_m * (x_m * -0.16666666666666666))); end
x_m = N[Abs[x], $MachinePrecision]
x_s = N[With[{TMP1 = Abs[1.0], TMP2 = Sign[x]}, TMP1 * If[TMP2 == 0, 1, TMP2]], $MachinePrecision]
code[x$95$s_, x$95$m_] := N[(x$95$s * N[(x$95$m * N[(x$95$m * N[(x$95$m * -0.16666666666666666), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
x_m = \left|x\right|
\\
x_s = \mathsf{copysign}\left(1, x\right)
\\
x_s \cdot \left(x_m \cdot \left(x_m \cdot \left(x_m \cdot -0.16666666666666666\right)\right)\right)
\end{array}
Initial program 73.1%
Taylor expanded in x around 0 96.4%
add-cube-cbrt95.9%
pow395.9%
*-commutative95.9%
cbrt-prod95.6%
rem-cbrt-cube95.7%
Applied egg-rr95.7%
unpow-prod-down95.7%
unpow395.7%
unpow295.7%
rem-cube-cbrt96.4%
associate-*r*96.4%
unpow296.4%
associate-*l*96.4%
Applied egg-rr96.4%
Final simplification96.4%
x_m = (fabs.f64 x) x_s = (copysign.f64 1 x) (FPCore (x_s x_m) :precision binary64 (* x_s (- x_m)))
x_m = fabs(x);
x_s = copysign(1.0, x);
double code(double x_s, double x_m) {
return x_s * -x_m;
}
x_m = abs(x)
x_s = copysign(1.0d0, x)
real(8) function code(x_s, x_m)
real(8), intent (in) :: x_s
real(8), intent (in) :: x_m
code = x_s * -x_m
end function
x_m = Math.abs(x);
x_s = Math.copySign(1.0, x);
public static double code(double x_s, double x_m) {
return x_s * -x_m;
}
x_m = math.fabs(x) x_s = math.copysign(1.0, x) def code(x_s, x_m): return x_s * -x_m
x_m = abs(x) x_s = copysign(1.0, x) function code(x_s, x_m) return Float64(x_s * Float64(-x_m)) end
x_m = abs(x); x_s = sign(x) * abs(1.0); function tmp = code(x_s, x_m) tmp = x_s * -x_m; end
x_m = N[Abs[x], $MachinePrecision]
x_s = N[With[{TMP1 = Abs[1.0], TMP2 = Sign[x]}, TMP1 * If[TMP2 == 0, 1, TMP2]], $MachinePrecision]
code[x$95$s_, x$95$m_] := N[(x$95$s * (-x$95$m)), $MachinePrecision]
\begin{array}{l}
x_m = \left|x\right|
\\
x_s = \mathsf{copysign}\left(1, x\right)
\\
x_s \cdot \left(-x_m\right)
\end{array}
Initial program 73.1%
Taylor expanded in x around inf 6.9%
neg-mul-16.9%
Simplified6.9%
Final simplification6.9%
(FPCore (x) :precision binary64 (if (< (fabs x) 0.07) (- (+ (- (/ (pow x 3.0) 6.0) (/ (pow x 5.0) 120.0)) (/ (pow x 7.0) 5040.0))) (- (sin x) x)))
double code(double x) {
double tmp;
if (fabs(x) < 0.07) {
tmp = -(((pow(x, 3.0) / 6.0) - (pow(x, 5.0) / 120.0)) + (pow(x, 7.0) / 5040.0));
} else {
tmp = sin(x) - x;
}
return tmp;
}
real(8) function code(x)
real(8), intent (in) :: x
real(8) :: tmp
if (abs(x) < 0.07d0) then
tmp = -((((x ** 3.0d0) / 6.0d0) - ((x ** 5.0d0) / 120.0d0)) + ((x ** 7.0d0) / 5040.0d0))
else
tmp = sin(x) - x
end if
code = tmp
end function
public static double code(double x) {
double tmp;
if (Math.abs(x) < 0.07) {
tmp = -(((Math.pow(x, 3.0) / 6.0) - (Math.pow(x, 5.0) / 120.0)) + (Math.pow(x, 7.0) / 5040.0));
} else {
tmp = Math.sin(x) - x;
}
return tmp;
}
def code(x): tmp = 0 if math.fabs(x) < 0.07: tmp = -(((math.pow(x, 3.0) / 6.0) - (math.pow(x, 5.0) / 120.0)) + (math.pow(x, 7.0) / 5040.0)) else: tmp = math.sin(x) - x return tmp
function code(x) tmp = 0.0 if (abs(x) < 0.07) tmp = Float64(-Float64(Float64(Float64((x ^ 3.0) / 6.0) - Float64((x ^ 5.0) / 120.0)) + Float64((x ^ 7.0) / 5040.0))); else tmp = Float64(sin(x) - x); end return tmp end
function tmp_2 = code(x) tmp = 0.0; if (abs(x) < 0.07) tmp = -((((x ^ 3.0) / 6.0) - ((x ^ 5.0) / 120.0)) + ((x ^ 7.0) / 5040.0)); else tmp = sin(x) - x; end tmp_2 = tmp; end
code[x_] := If[Less[N[Abs[x], $MachinePrecision], 0.07], (-N[(N[(N[(N[Power[x, 3.0], $MachinePrecision] / 6.0), $MachinePrecision] - N[(N[Power[x, 5.0], $MachinePrecision] / 120.0), $MachinePrecision]), $MachinePrecision] + N[(N[Power[x, 7.0], $MachinePrecision] / 5040.0), $MachinePrecision]), $MachinePrecision]), N[(N[Sin[x], $MachinePrecision] - x), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;\left|x\right| < 0.07:\\
\;\;\;\;-\left(\left(\frac{{x}^{3}}{6} - \frac{{x}^{5}}{120}\right) + \frac{{x}^{7}}{5040}\right)\\
\mathbf{else}:\\
\;\;\;\;\sin x - x\\
\end{array}
\end{array}
herbie shell --seed 2023337
(FPCore (x)
:name "bug500 (missed optimization)"
:precision binary64
:pre (and (< -1000.0 x) (< x 1000.0))
:herbie-target
(if (< (fabs x) 0.07) (- (+ (- (/ (pow x 3.0) 6.0) (/ (pow x 5.0) 120.0)) (/ (pow x 7.0) 5040.0))) (- (sin x) x))
(- (sin x) x))