
(FPCore (e v) :precision binary64 (/ (* e (sin v)) (+ 1.0 (* e (cos v)))))
double code(double e, double v) {
return (e * sin(v)) / (1.0 + (e * cos(v)));
}
real(8) function code(e, v)
real(8), intent (in) :: e
real(8), intent (in) :: v
code = (e * sin(v)) / (1.0d0 + (e * cos(v)))
end function
public static double code(double e, double v) {
return (e * Math.sin(v)) / (1.0 + (e * Math.cos(v)));
}
def code(e, v): return (e * math.sin(v)) / (1.0 + (e * math.cos(v)))
function code(e, v) return Float64(Float64(e * sin(v)) / Float64(1.0 + Float64(e * cos(v)))) end
function tmp = code(e, v) tmp = (e * sin(v)) / (1.0 + (e * cos(v))); end
code[e_, v_] := N[(N[(e * N[Sin[v], $MachinePrecision]), $MachinePrecision] / N[(1.0 + N[(e * N[Cos[v], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{e \cdot \sin v}{1 + e \cdot \cos v}
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 11 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (e v) :precision binary64 (/ (* e (sin v)) (+ 1.0 (* e (cos v)))))
double code(double e, double v) {
return (e * sin(v)) / (1.0 + (e * cos(v)));
}
real(8) function code(e, v)
real(8), intent (in) :: e
real(8), intent (in) :: v
code = (e * sin(v)) / (1.0d0 + (e * cos(v)))
end function
public static double code(double e, double v) {
return (e * Math.sin(v)) / (1.0 + (e * Math.cos(v)));
}
def code(e, v): return (e * math.sin(v)) / (1.0 + (e * math.cos(v)))
function code(e, v) return Float64(Float64(e * sin(v)) / Float64(1.0 + Float64(e * cos(v)))) end
function tmp = code(e, v) tmp = (e * sin(v)) / (1.0 + (e * cos(v))); end
code[e_, v_] := N[(N[(e * N[Sin[v], $MachinePrecision]), $MachinePrecision] / N[(1.0 + N[(e * N[Cos[v], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{e \cdot \sin v}{1 + e \cdot \cos v}
\end{array}
(FPCore (e v) :precision binary64 (/ (* e (sin v)) (fma (cos v) e 1.0)))
double code(double e, double v) {
return (e * sin(v)) / fma(cos(v), e, 1.0);
}
function code(e, v) return Float64(Float64(e * sin(v)) / fma(cos(v), e, 1.0)) end
code[e_, v_] := N[(N[(e * N[Sin[v], $MachinePrecision]), $MachinePrecision] / N[(N[Cos[v], $MachinePrecision] * e + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{e \cdot \sin v}{\mathsf{fma}\left(\cos v, e, 1\right)}
\end{array}
Initial program 99.7%
lift-cos.f64N/A
lift-*.f64N/A
+-commutativeN/A
lift-*.f64N/A
*-commutativeN/A
lower-fma.f6499.7
Applied rewrites99.7%
(FPCore (e v) :precision binary64 (* e (/ (sin v) (fma e (cos v) 1.0))))
double code(double e, double v) {
return e * (sin(v) / fma(e, cos(v), 1.0));
}
function code(e, v) return Float64(e * Float64(sin(v) / fma(e, cos(v), 1.0))) end
code[e_, v_] := N[(e * N[(N[Sin[v], $MachinePrecision] / N[(e * N[Cos[v], $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
e \cdot \frac{\sin v}{\mathsf{fma}\left(e, \cos v, 1\right)}
\end{array}
Initial program 99.7%
lift-sin.f64N/A
lift-cos.f64N/A
lift-*.f64N/A
lift-+.f64N/A
associate-/l*N/A
*-commutativeN/A
lower-*.f64N/A
lower-/.f6499.7
lift-+.f64N/A
+-commutativeN/A
lift-*.f64N/A
lower-fma.f6499.7
Applied rewrites99.7%
Final simplification99.7%
(FPCore (e v) :precision binary64 (/ (* e (sin v)) (+ e 1.0)))
double code(double e, double v) {
return (e * sin(v)) / (e + 1.0);
}
real(8) function code(e, v)
real(8), intent (in) :: e
real(8), intent (in) :: v
code = (e * sin(v)) / (e + 1.0d0)
end function
public static double code(double e, double v) {
return (e * Math.sin(v)) / (e + 1.0);
}
def code(e, v): return (e * math.sin(v)) / (e + 1.0)
function code(e, v) return Float64(Float64(e * sin(v)) / Float64(e + 1.0)) end
function tmp = code(e, v) tmp = (e * sin(v)) / (e + 1.0); end
code[e_, v_] := N[(N[(e * N[Sin[v], $MachinePrecision]), $MachinePrecision] / N[(e + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{e \cdot \sin v}{e + 1}
\end{array}
Initial program 99.7%
Taylor expanded in v around 0
lower-+.f6499.1
Applied rewrites99.1%
Final simplification99.1%
(FPCore (e v) :precision binary64 (* (sin v) (- e (* e e))))
double code(double e, double v) {
return sin(v) * (e - (e * e));
}
real(8) function code(e, v)
real(8), intent (in) :: e
real(8), intent (in) :: v
code = sin(v) * (e - (e * e))
end function
public static double code(double e, double v) {
return Math.sin(v) * (e - (e * e));
}
def code(e, v): return math.sin(v) * (e - (e * e))
function code(e, v) return Float64(sin(v) * Float64(e - Float64(e * e))) end
function tmp = code(e, v) tmp = sin(v) * (e - (e * e)); end
code[e_, v_] := N[(N[Sin[v], $MachinePrecision] * N[(e - N[(e * e), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\sin v \cdot \left(e - e \cdot e\right)
\end{array}
Initial program 99.7%
Taylor expanded in e around 0
+-commutativeN/A
distribute-lft-inN/A
associate-*r*N/A
associate-*r*N/A
mul-1-negN/A
distribute-rgt-neg-outN/A
unpow2N/A
associate-*r*N/A
distribute-lft-neg-inN/A
distribute-rgt-outN/A
lower-*.f64N/A
lower-sin.f64N/A
*-commutativeN/A
distribute-rgt-neg-inN/A
lower-fma.f64N/A
Applied rewrites98.5%
Taylor expanded in v around 0
mul-1-negN/A
unsub-negN/A
lower--.f64N/A
unpow2N/A
lower-*.f6497.9
Applied rewrites97.9%
(FPCore (e v)
:precision binary64
(let* ((t_0 (fma (* v v) (fma e -0.3333333333333333 0.16666666666666666) e)))
(if (<= v 6e-30)
(* (/ (* e v) (- 1.0 (* t_0 t_0))) (- 1.0 t_0))
(* e (sin v)))))
double code(double e, double v) {
double t_0 = fma((v * v), fma(e, -0.3333333333333333, 0.16666666666666666), e);
double tmp;
if (v <= 6e-30) {
tmp = ((e * v) / (1.0 - (t_0 * t_0))) * (1.0 - t_0);
} else {
tmp = e * sin(v);
}
return tmp;
}
function code(e, v) t_0 = fma(Float64(v * v), fma(e, -0.3333333333333333, 0.16666666666666666), e) tmp = 0.0 if (v <= 6e-30) tmp = Float64(Float64(Float64(e * v) / Float64(1.0 - Float64(t_0 * t_0))) * Float64(1.0 - t_0)); else tmp = Float64(e * sin(v)); end return tmp end
code[e_, v_] := Block[{t$95$0 = N[(N[(v * v), $MachinePrecision] * N[(e * -0.3333333333333333 + 0.16666666666666666), $MachinePrecision] + e), $MachinePrecision]}, If[LessEqual[v, 6e-30], N[(N[(N[(e * v), $MachinePrecision] / N[(1.0 - N[(t$95$0 * t$95$0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(1.0 - t$95$0), $MachinePrecision]), $MachinePrecision], N[(e * N[Sin[v], $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \mathsf{fma}\left(v \cdot v, \mathsf{fma}\left(e, -0.3333333333333333, 0.16666666666666666\right), e\right)\\
\mathbf{if}\;v \leq 6 \cdot 10^{-30}:\\
\;\;\;\;\frac{e \cdot v}{1 - t\_0 \cdot t\_0} \cdot \left(1 - t\_0\right)\\
\mathbf{else}:\\
\;\;\;\;e \cdot \sin v\\
\end{array}
\end{array}
if v < 5.9999999999999998e-30Initial program 99.8%
lift-sin.f64N/A
lift-cos.f64N/A
lift-*.f64N/A
lift-+.f64N/A
associate-/l*N/A
clear-numN/A
un-div-invN/A
lower-/.f64N/A
lower-/.f6499.7
lift-+.f64N/A
+-commutativeN/A
lift-*.f64N/A
lower-fma.f6499.7
Applied rewrites99.7%
Taylor expanded in v around 0
lower-/.f64N/A
associate-+r+N/A
+-commutativeN/A
lower-fma.f64N/A
unpow2N/A
lower-*.f64N/A
sub-negN/A
*-commutativeN/A
lower-fma.f64N/A
*-commutativeN/A
distribute-rgt-neg-inN/A
metadata-evalN/A
+-commutativeN/A
distribute-lft1-inN/A
lower-fma.f64N/A
+-commutativeN/A
lower-+.f6465.7
Applied rewrites65.7%
lift-*.f64N/A
lift-fma.f64N/A
lift-fma.f64N/A
lift-+.f64N/A
lift-fma.f64N/A
associate-/r/N/A
associate-*l/N/A
lift-*.f64N/A
div-invN/A
lower-*.f64N/A
lift-*.f64N/A
*-commutativeN/A
lower-*.f64N/A
lower-/.f6465.8
lift-fma.f64N/A
lift-+.f64N/A
associate-+r+N/A
Applied rewrites65.8%
*-commutativeN/A
lift-*.f64N/A
lift-fma.f64N/A
lift-*.f64N/A
lift-fma.f64N/A
lift-+.f64N/A
clear-numN/A
un-div-invN/A
/-rgt-identityN/A
lift-+.f64N/A
flip-+N/A
associate-/r/N/A
lower-*.f64N/A
Applied rewrites64.9%
if 5.9999999999999998e-30 < v Initial program 99.5%
Taylor expanded in e around 0
lower-*.f64N/A
lower-sin.f6499.5
Applied rewrites99.5%
(FPCore (e v) :precision binary64 (* v (/ e (+ 1.0 (fma v (* v (fma e -0.3333333333333333 0.16666666666666666)) e)))))
double code(double e, double v) {
return v * (e / (1.0 + fma(v, (v * fma(e, -0.3333333333333333, 0.16666666666666666)), e)));
}
function code(e, v) return Float64(v * Float64(e / Float64(1.0 + fma(v, Float64(v * fma(e, -0.3333333333333333, 0.16666666666666666)), e)))) end
code[e_, v_] := N[(v * N[(e / N[(1.0 + N[(v * N[(v * N[(e * -0.3333333333333333 + 0.16666666666666666), $MachinePrecision]), $MachinePrecision] + e), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
v \cdot \frac{e}{1 + \mathsf{fma}\left(v, v \cdot \mathsf{fma}\left(e, -0.3333333333333333, 0.16666666666666666\right), e\right)}
\end{array}
Initial program 99.7%
lift-sin.f64N/A
lift-cos.f64N/A
lift-*.f64N/A
lift-+.f64N/A
associate-/l*N/A
clear-numN/A
un-div-invN/A
lower-/.f64N/A
lower-/.f6499.7
lift-+.f64N/A
+-commutativeN/A
lift-*.f64N/A
lower-fma.f6499.7
Applied rewrites99.7%
Taylor expanded in v around 0
lower-/.f64N/A
associate-+r+N/A
+-commutativeN/A
lower-fma.f64N/A
unpow2N/A
lower-*.f64N/A
sub-negN/A
*-commutativeN/A
lower-fma.f64N/A
*-commutativeN/A
distribute-rgt-neg-inN/A
metadata-evalN/A
+-commutativeN/A
distribute-lft1-inN/A
lower-fma.f64N/A
+-commutativeN/A
lower-+.f6454.5
Applied rewrites54.5%
lift-*.f64N/A
lift-fma.f64N/A
lift-fma.f64N/A
lift-+.f64N/A
lift-fma.f64N/A
associate-/r/N/A
lower-*.f64N/A
Applied rewrites54.6%
Final simplification54.6%
(FPCore (e v) :precision binary64 (* v (/ e (+ e 1.0))))
double code(double e, double v) {
return v * (e / (e + 1.0));
}
real(8) function code(e, v)
real(8), intent (in) :: e
real(8), intent (in) :: v
code = v * (e / (e + 1.0d0))
end function
public static double code(double e, double v) {
return v * (e / (e + 1.0));
}
def code(e, v): return v * (e / (e + 1.0))
function code(e, v) return Float64(v * Float64(e / Float64(e + 1.0))) end
function tmp = code(e, v) tmp = v * (e / (e + 1.0)); end
code[e_, v_] := N[(v * N[(e / N[(e + 1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
v \cdot \frac{e}{e + 1}
\end{array}
Initial program 99.7%
Taylor expanded in v around 0
lower-/.f64N/A
lower-*.f64N/A
lower-+.f6453.4
Applied rewrites53.4%
*-commutativeN/A
lift-+.f64N/A
associate-/l*N/A
*-commutativeN/A
lower-*.f64N/A
lower-/.f6453.4
lift-+.f64N/A
+-commutativeN/A
lower-+.f6453.4
Applied rewrites53.4%
Final simplification53.4%
(FPCore (e v) :precision binary64 (fma v e (- (* e (* e v)))))
double code(double e, double v) {
return fma(v, e, -(e * (e * v)));
}
function code(e, v) return fma(v, e, Float64(-Float64(e * Float64(e * v)))) end
code[e_, v_] := N[(v * e + (-N[(e * N[(e * v), $MachinePrecision]), $MachinePrecision])), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(v, e, -e \cdot \left(e \cdot v\right)\right)
\end{array}
Initial program 99.7%
Taylor expanded in v around 0
lower-/.f64N/A
lower-*.f64N/A
lower-+.f6453.4
Applied rewrites53.4%
Taylor expanded in e around 0
lower-*.f64N/A
mul-1-negN/A
unsub-negN/A
lower--.f64N/A
lower-*.f6452.2
Applied rewrites52.2%
lift-*.f64N/A
sub-negN/A
distribute-rgt-inN/A
lower-fma.f64N/A
lower-*.f64N/A
lift-*.f64N/A
distribute-rgt-neg-inN/A
lower-*.f64N/A
lower-neg.f6452.2
Applied rewrites52.2%
Final simplification52.2%
(FPCore (e v) :precision binary64 (* v (- e (* e e))))
double code(double e, double v) {
return v * (e - (e * e));
}
real(8) function code(e, v)
real(8), intent (in) :: e
real(8), intent (in) :: v
code = v * (e - (e * e))
end function
public static double code(double e, double v) {
return v * (e - (e * e));
}
def code(e, v): return v * (e - (e * e))
function code(e, v) return Float64(v * Float64(e - Float64(e * e))) end
function tmp = code(e, v) tmp = v * (e - (e * e)); end
code[e_, v_] := N[(v * N[(e - N[(e * e), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
v \cdot \left(e - e \cdot e\right)
\end{array}
Initial program 99.7%
Taylor expanded in e around 0
+-commutativeN/A
distribute-lft-inN/A
associate-*r*N/A
associate-*r*N/A
mul-1-negN/A
distribute-rgt-neg-outN/A
unpow2N/A
associate-*r*N/A
distribute-lft-neg-inN/A
distribute-rgt-outN/A
lower-*.f64N/A
lower-sin.f64N/A
*-commutativeN/A
distribute-rgt-neg-inN/A
lower-fma.f64N/A
Applied rewrites98.5%
lift-cos.f64N/A
lift-neg.f64N/A
associate-*r*N/A
lift-neg.f64N/A
distribute-rgt-neg-outN/A
distribute-lft-neg-inN/A
distribute-lft1-inN/A
+-commutativeN/A
*-rgt-identityN/A
cancel-sign-sub-invN/A
metadata-evalN/A
lower-*.f64N/A
metadata-evalN/A
cancel-sign-sub-invN/A
*-rgt-identityN/A
+-commutativeN/A
distribute-rgt-neg-inN/A
lift-neg.f64N/A
lower-fma.f6498.5
Applied rewrites98.5%
Taylor expanded in v around 0
associate-*r*N/A
*-commutativeN/A
associate-*r*N/A
lower-*.f64N/A
distribute-rgt-inN/A
*-lft-identityN/A
mul-1-negN/A
distribute-lft-neg-outN/A
unpow2N/A
unsub-negN/A
lower--.f64N/A
unpow2N/A
lower-*.f6452.2
Applied rewrites52.2%
(FPCore (e v) :precision binary64 (* e (- v (* e v))))
double code(double e, double v) {
return e * (v - (e * v));
}
real(8) function code(e, v)
real(8), intent (in) :: e
real(8), intent (in) :: v
code = e * (v - (e * v))
end function
public static double code(double e, double v) {
return e * (v - (e * v));
}
def code(e, v): return e * (v - (e * v))
function code(e, v) return Float64(e * Float64(v - Float64(e * v))) end
function tmp = code(e, v) tmp = e * (v - (e * v)); end
code[e_, v_] := N[(e * N[(v - N[(e * v), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
e \cdot \left(v - e \cdot v\right)
\end{array}
Initial program 99.7%
Taylor expanded in v around 0
lower-/.f64N/A
lower-*.f64N/A
lower-+.f6453.4
Applied rewrites53.4%
Taylor expanded in e around 0
lower-*.f64N/A
mul-1-negN/A
unsub-negN/A
lower--.f64N/A
lower-*.f6452.2
Applied rewrites52.2%
(FPCore (e v) :precision binary64 (* e v))
double code(double e, double v) {
return e * v;
}
real(8) function code(e, v)
real(8), intent (in) :: e
real(8), intent (in) :: v
code = e * v
end function
public static double code(double e, double v) {
return e * v;
}
def code(e, v): return e * v
function code(e, v) return Float64(e * v) end
function tmp = code(e, v) tmp = e * v; end
code[e_, v_] := N[(e * v), $MachinePrecision]
\begin{array}{l}
\\
e \cdot v
\end{array}
Initial program 99.7%
Taylor expanded in e around 0
lower-*.f64N/A
lower-sin.f6497.2
Applied rewrites97.2%
Taylor expanded in v around 0
lower-*.f6451.5
Applied rewrites51.5%
herbie shell --seed 2024214
(FPCore (e v)
:name "Trigonometry A"
:precision binary64
:pre (and (<= 0.0 e) (<= e 1.0))
(/ (* e (sin v)) (+ 1.0 (* e (cos v)))))