
(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 13 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 (* (/ (sin v) (fma (cos v) e 1.0)) e))
double code(double e, double v) {
return (sin(v) / fma(cos(v), e, 1.0)) * e;
}
function code(e, v) return Float64(Float64(sin(v) / fma(cos(v), e, 1.0)) * e) end
code[e_, v_] := N[(N[(N[Sin[v], $MachinePrecision] / N[(N[Cos[v], $MachinePrecision] * e + 1.0), $MachinePrecision]), $MachinePrecision] * e), $MachinePrecision]
\begin{array}{l}
\\
\frac{\sin v}{\mathsf{fma}\left(\cos v, e, 1\right)} \cdot e
\end{array}
Initial program 99.8%
lift-/.f64N/A
lift-*.f64N/A
associate-/l*N/A
*-commutativeN/A
lower-*.f64N/A
lower-/.f6499.8
lift-+.f64N/A
+-commutativeN/A
lift-*.f64N/A
*-commutativeN/A
lower-fma.f6499.8
Applied rewrites99.8%
(FPCore (e v) :precision binary64 (pow (/ (fma -0.3333333333333333 (* v v) (+ (pow e -1.0) 1.0)) v) -1.0))
double code(double e, double v) {
return pow((fma(-0.3333333333333333, (v * v), (pow(e, -1.0) + 1.0)) / v), -1.0);
}
function code(e, v) return Float64(fma(-0.3333333333333333, Float64(v * v), Float64((e ^ -1.0) + 1.0)) / v) ^ -1.0 end
code[e_, v_] := N[Power[N[(N[(-0.3333333333333333 * N[(v * v), $MachinePrecision] + N[(N[Power[e, -1.0], $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision] / v), $MachinePrecision], -1.0], $MachinePrecision]
\begin{array}{l}
\\
{\left(\frac{\mathsf{fma}\left(-0.3333333333333333, v \cdot v, {e}^{-1} + 1\right)}{v}\right)}^{-1}
\end{array}
Initial program 99.8%
lift-/.f64N/A
clear-numN/A
lower-/.f64N/A
lift-*.f64N/A
associate-/r*N/A
lower-/.f64N/A
lower-/.f6499.1
lift-+.f64N/A
+-commutativeN/A
lift-*.f64N/A
*-commutativeN/A
lower-fma.f6499.1
Applied rewrites99.1%
Taylor expanded in v around 0
lower-/.f64N/A
Applied rewrites53.3%
Taylor expanded in e around inf
Applied rewrites53.2%
Final simplification53.2%
(FPCore (e v) :precision binary64 (* (fma (- e) (cos v) 1.0) (* (sin v) e)))
double code(double e, double v) {
return fma(-e, cos(v), 1.0) * (sin(v) * e);
}
function code(e, v) return Float64(fma(Float64(-e), cos(v), 1.0) * Float64(sin(v) * e)) end
code[e_, v_] := N[(N[((-e) * N[Cos[v], $MachinePrecision] + 1.0), $MachinePrecision] * N[(N[Sin[v], $MachinePrecision] * e), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(-e, \cos v, 1\right) \cdot \left(\sin v \cdot e\right)
\end{array}
Initial program 99.8%
Taylor expanded in e around 0
distribute-lft-inN/A
mul-1-negN/A
distribute-rgt-neg-outN/A
associate-*r*N/A
*-commutativeN/A
associate-*l*N/A
associate-*r*N/A
distribute-lft-neg-inN/A
distribute-rgt1-inN/A
lower-*.f64N/A
distribute-lft-neg-inN/A
mul-1-negN/A
lower-fma.f64N/A
mul-1-negN/A
lower-neg.f64N/A
lower-cos.f64N/A
*-commutativeN/A
lower-*.f64N/A
lower-sin.f6499.6
Applied rewrites99.6%
(FPCore (e v) :precision binary64 (* (* (fma (- e) (cos v) 1.0) (sin v)) e))
double code(double e, double v) {
return (fma(-e, cos(v), 1.0) * sin(v)) * e;
}
function code(e, v) return Float64(Float64(fma(Float64(-e), cos(v), 1.0) * sin(v)) * e) end
code[e_, v_] := N[(N[(N[((-e) * N[Cos[v], $MachinePrecision] + 1.0), $MachinePrecision] * N[Sin[v], $MachinePrecision]), $MachinePrecision] * e), $MachinePrecision]
\begin{array}{l}
\\
\left(\mathsf{fma}\left(-e, \cos v, 1\right) \cdot \sin v\right) \cdot e
\end{array}
Initial program 99.8%
Taylor expanded in e around 0
*-commutativeN/A
lower-*.f64N/A
Applied rewrites99.8%
Taylor expanded in e around 0
*-commutativeN/A
mul-1-negN/A
*-commutativeN/A
distribute-lft-neg-inN/A
mul-1-negN/A
lower-*.f64N/A
Applied rewrites99.6%
(FPCore (e v) :precision binary64 (pow (/ (/ (fma (* v v) 0.16666666666666666 1.0) v) e) -1.0))
double code(double e, double v) {
return pow(((fma((v * v), 0.16666666666666666, 1.0) / v) / e), -1.0);
}
function code(e, v) return Float64(Float64(fma(Float64(v * v), 0.16666666666666666, 1.0) / v) / e) ^ -1.0 end
code[e_, v_] := N[Power[N[(N[(N[(N[(v * v), $MachinePrecision] * 0.16666666666666666 + 1.0), $MachinePrecision] / v), $MachinePrecision] / e), $MachinePrecision], -1.0], $MachinePrecision]
\begin{array}{l}
\\
{\left(\frac{\frac{\mathsf{fma}\left(v \cdot v, 0.16666666666666666, 1\right)}{v}}{e}\right)}^{-1}
\end{array}
Initial program 99.8%
lift-/.f64N/A
clear-numN/A
lower-/.f64N/A
lift-*.f64N/A
associate-/r*N/A
lower-/.f64N/A
lower-/.f6499.1
lift-+.f64N/A
+-commutativeN/A
lift-*.f64N/A
*-commutativeN/A
lower-fma.f6499.1
Applied rewrites99.1%
Taylor expanded in v around 0
lower-/.f64N/A
Applied rewrites53.3%
Taylor expanded in e around 0
Applied rewrites52.8%
Final simplification52.8%
(FPCore (e v) :precision binary64 (* (* (fma (- e 1.0) e 1.0) (sin v)) e))
double code(double e, double v) {
return (fma((e - 1.0), e, 1.0) * sin(v)) * e;
}
function code(e, v) return Float64(Float64(fma(Float64(e - 1.0), e, 1.0) * sin(v)) * e) end
code[e_, v_] := N[(N[(N[(N[(e - 1.0), $MachinePrecision] * e + 1.0), $MachinePrecision] * N[Sin[v], $MachinePrecision]), $MachinePrecision] * e), $MachinePrecision]
\begin{array}{l}
\\
\left(\mathsf{fma}\left(e - 1, e, 1\right) \cdot \sin v\right) \cdot e
\end{array}
Initial program 99.8%
Taylor expanded in e around 0
*-commutativeN/A
lower-*.f64N/A
Applied rewrites99.8%
Taylor expanded in e around 0
*-commutativeN/A
sub-negN/A
mul-1-negN/A
+-commutativeN/A
lower-*.f64N/A
Applied rewrites99.8%
Taylor expanded in v around 0
Applied rewrites99.0%
(FPCore (e v) :precision binary64 (* (sin v) e))
double code(double e, double v) {
return sin(v) * e;
}
real(8) function code(e, v)
real(8), intent (in) :: e
real(8), intent (in) :: v
code = sin(v) * e
end function
public static double code(double e, double v) {
return Math.sin(v) * e;
}
def code(e, v): return math.sin(v) * e
function code(e, v) return Float64(sin(v) * e) end
function tmp = code(e, v) tmp = sin(v) * e; end
code[e_, v_] := N[(N[Sin[v], $MachinePrecision] * e), $MachinePrecision]
\begin{array}{l}
\\
\sin v \cdot e
\end{array}
Initial program 99.8%
Taylor expanded in e around 0
*-commutativeN/A
lower-*.f64N/A
lower-sin.f6498.7
Applied rewrites98.7%
(FPCore (e v)
:precision binary64
(/
e
(/
(fma
(fma -0.5 e (fma 0.16666666666666666 e 0.16666666666666666))
(* v v)
(+ 1.0 e))
v)))
double code(double e, double v) {
return e / (fma(fma(-0.5, e, fma(0.16666666666666666, e, 0.16666666666666666)), (v * v), (1.0 + e)) / v);
}
function code(e, v) return Float64(e / Float64(fma(fma(-0.5, e, fma(0.16666666666666666, e, 0.16666666666666666)), Float64(v * v), Float64(1.0 + e)) / v)) end
code[e_, v_] := N[(e / N[(N[(N[(-0.5 * e + N[(0.16666666666666666 * e + 0.16666666666666666), $MachinePrecision]), $MachinePrecision] * N[(v * v), $MachinePrecision] + N[(1.0 + e), $MachinePrecision]), $MachinePrecision] / v), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{e}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(-0.5, e, \mathsf{fma}\left(0.16666666666666666, e, 0.16666666666666666\right)\right), v \cdot v, 1 + e\right)}{v}}
\end{array}
Initial program 99.8%
Taylor expanded in v around 0
lower-+.f6499.0
Applied rewrites99.0%
lift-/.f64N/A
lift-*.f64N/A
associate-/l*N/A
clear-numN/A
un-div-invN/A
lower-/.f64N/A
lower-/.f6498.9
Applied rewrites98.9%
Taylor expanded in v around 0
lower-/.f64N/A
associate-+r+N/A
+-commutativeN/A
*-commutativeN/A
lower-fma.f64N/A
sub-negN/A
lower-fma.f64N/A
distribute-lft-neg-inN/A
metadata-evalN/A
+-commutativeN/A
distribute-lft-inN/A
metadata-evalN/A
lower-fma.f64N/A
unpow2N/A
lower-*.f64N/A
lower-+.f6453.7
Applied rewrites53.7%
(FPCore (e v) :precision binary64 (* (/ e (+ 1.0 e)) v))
double code(double e, double v) {
return (e / (1.0 + e)) * v;
}
real(8) function code(e, v)
real(8), intent (in) :: e
real(8), intent (in) :: v
code = (e / (1.0d0 + e)) * v
end function
public static double code(double e, double v) {
return (e / (1.0 + e)) * v;
}
def code(e, v): return (e / (1.0 + e)) * v
function code(e, v) return Float64(Float64(e / Float64(1.0 + e)) * v) end
function tmp = code(e, v) tmp = (e / (1.0 + e)) * v; end
code[e_, v_] := N[(N[(e / N[(1.0 + e), $MachinePrecision]), $MachinePrecision] * v), $MachinePrecision]
\begin{array}{l}
\\
\frac{e}{1 + e} \cdot v
\end{array}
Initial program 99.8%
Taylor expanded in v around 0
associate-*l/N/A
lower-*.f64N/A
lower-/.f64N/A
lower-+.f6452.7
Applied rewrites52.7%
(FPCore (e v) :precision binary64 (fma (* (- v) e) e (* v e)))
double code(double e, double v) {
return fma((-v * e), e, (v * e));
}
function code(e, v) return fma(Float64(Float64(-v) * e), e, Float64(v * e)) end
code[e_, v_] := N[(N[((-v) * e), $MachinePrecision] * e + N[(v * e), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(\left(-v\right) \cdot e, e, v \cdot e\right)
\end{array}
Initial program 99.8%
Taylor expanded in v around 0
associate-*l/N/A
lower-*.f64N/A
lower-/.f64N/A
lower-+.f6452.7
Applied rewrites52.7%
Taylor expanded in e around 0
Applied rewrites52.7%
Applied rewrites52.7%
(FPCore (e v) :precision binary64 (* (* (- 1.0 e) e) v))
double code(double e, double v) {
return ((1.0 - e) * e) * v;
}
real(8) function code(e, v)
real(8), intent (in) :: e
real(8), intent (in) :: v
code = ((1.0d0 - e) * e) * v
end function
public static double code(double e, double v) {
return ((1.0 - e) * e) * v;
}
def code(e, v): return ((1.0 - e) * e) * v
function code(e, v) return Float64(Float64(Float64(1.0 - e) * e) * v) end
function tmp = code(e, v) tmp = ((1.0 - e) * e) * v; end
code[e_, v_] := N[(N[(N[(1.0 - e), $MachinePrecision] * e), $MachinePrecision] * v), $MachinePrecision]
\begin{array}{l}
\\
\left(\left(1 - e\right) \cdot e\right) \cdot v
\end{array}
Initial program 99.8%
Taylor expanded in v around 0
associate-*l/N/A
lower-*.f64N/A
lower-/.f64N/A
lower-+.f6452.7
Applied rewrites52.7%
Taylor expanded in e around 0
Applied rewrites52.7%
(FPCore (e v) :precision binary64 (* (fma (- v) e v) e))
double code(double e, double v) {
return fma(-v, e, v) * e;
}
function code(e, v) return Float64(fma(Float64(-v), e, v) * e) end
code[e_, v_] := N[(N[((-v) * e + v), $MachinePrecision] * e), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(-v, e, v\right) \cdot e
\end{array}
Initial program 99.8%
Taylor expanded in v around 0
associate-*l/N/A
lower-*.f64N/A
lower-/.f64N/A
lower-+.f6452.7
Applied rewrites52.7%
Taylor expanded in e around 0
Applied rewrites52.7%
(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 99.8%
Taylor expanded in v around 0
associate-*l/N/A
lower-*.f64N/A
lower-/.f64N/A
lower-+.f6452.7
Applied rewrites52.7%
Taylor expanded in e around 0
Applied rewrites52.3%
herbie shell --seed 2024314
(FPCore (e v)
:name "Trigonometry A"
:precision binary64
:pre (and (<= 0.0 e) (<= e 1.0))
(/ (* e (sin v)) (+ 1.0 (* e (cos v)))))