
(FPCore (a b angle) :precision binary64 (let* ((t_0 (* (/ angle 180.0) (PI)))) (+ (pow (* a (sin t_0)) 2.0) (pow (* b (cos t_0)) 2.0))))
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \frac{angle}{180} \cdot \mathsf{PI}\left(\right)\\
{\left(a \cdot \sin t\_0\right)}^{2} + {\left(b \cdot \cos t\_0\right)}^{2}
\end{array}
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 10 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (a b angle) :precision binary64 (let* ((t_0 (* (/ angle 180.0) (PI)))) (+ (pow (* a (sin t_0)) 2.0) (pow (* b (cos t_0)) 2.0))))
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \frac{angle}{180} \cdot \mathsf{PI}\left(\right)\\
{\left(a \cdot \sin t\_0\right)}^{2} + {\left(b \cdot \cos t\_0\right)}^{2}
\end{array}
\end{array}
(FPCore (a b angle) :precision binary64 (fma (* (* 1.0 b) 1.0) b (pow (* (sin (* (* 0.005555555555555556 (PI)) angle)) a) 2.0)))
\begin{array}{l}
\\
\mathsf{fma}\left(\left(1 \cdot b\right) \cdot 1, b, {\left(\sin \left(\left(0.005555555555555556 \cdot \mathsf{PI}\left(\right)\right) \cdot angle\right) \cdot a\right)}^{2}\right)
\end{array}
Initial program 83.9%
Taylor expanded in angle around inf
*-commutativeN/A
associate-*r*N/A
lower-sin.f64N/A
lower-*.f64N/A
*-commutativeN/A
lower-*.f64N/A
lower-PI.f6483.9
Applied rewrites83.9%
Taylor expanded in angle around 0
Applied rewrites84.0%
lift-+.f64N/A
+-commutativeN/A
lift-pow.f64N/A
unpow2N/A
lift-*.f64N/A
*-commutativeN/A
associate-*r*N/A
lower-fma.f64N/A
Applied rewrites84.0%
(FPCore (a b angle)
:precision binary64
(if (<= a 5.8e-54)
(* b b)
(fma
(* (* 1.0 b) 1.0)
b
(pow (* (* (* 0.005555555555555556 (PI)) angle) a) 2.0))))\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;a \leq 5.8 \cdot 10^{-54}:\\
\;\;\;\;b \cdot b\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(\left(1 \cdot b\right) \cdot 1, b, {\left(\left(\left(0.005555555555555556 \cdot \mathsf{PI}\left(\right)\right) \cdot angle\right) \cdot a\right)}^{2}\right)\\
\end{array}
\end{array}
if a < 5.80000000000000029e-54Initial program 82.4%
Taylor expanded in angle around 0
unpow2N/A
lower-*.f6465.8
Applied rewrites65.8%
if 5.80000000000000029e-54 < a Initial program 87.7%
Taylor expanded in angle around inf
*-commutativeN/A
associate-*r*N/A
lower-sin.f64N/A
lower-*.f64N/A
*-commutativeN/A
lower-*.f64N/A
lower-PI.f6487.7
Applied rewrites87.7%
Taylor expanded in angle around 0
Applied rewrites87.9%
lift-+.f64N/A
+-commutativeN/A
lift-pow.f64N/A
unpow2N/A
lift-*.f64N/A
*-commutativeN/A
associate-*r*N/A
lower-fma.f64N/A
Applied rewrites87.9%
Taylor expanded in angle around 0
Applied rewrites85.8%
(FPCore (a b angle)
:precision binary64
(if (<= a 5.8e-54)
(* b b)
(if (<= a 1.35e+154)
(fma
(* (* -3.08641975308642e-5 (* (PI) (PI))) (* (- a) a))
(* angle angle)
(* b b))
(* (pow (* a (* (PI) angle)) 2.0) 3.08641975308642e-5))))\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;a \leq 5.8 \cdot 10^{-54}:\\
\;\;\;\;b \cdot b\\
\mathbf{elif}\;a \leq 1.35 \cdot 10^{+154}:\\
\;\;\;\;\mathsf{fma}\left(\left(-3.08641975308642 \cdot 10^{-5} \cdot \left(\mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\right)\right) \cdot \left(\left(-a\right) \cdot a\right), angle \cdot angle, b \cdot b\right)\\
\mathbf{else}:\\
\;\;\;\;{\left(a \cdot \left(\mathsf{PI}\left(\right) \cdot angle\right)\right)}^{2} \cdot 3.08641975308642 \cdot 10^{-5}\\
\end{array}
\end{array}
if a < 5.80000000000000029e-54Initial program 82.4%
Taylor expanded in angle around 0
unpow2N/A
lower-*.f6465.8
Applied rewrites65.8%
if 5.80000000000000029e-54 < a < 1.35000000000000003e154Initial program 74.4%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites32.7%
Taylor expanded in a around inf
Applied rewrites70.3%
if 1.35000000000000003e154 < a Initial program 99.6%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites37.1%
Taylor expanded in a around inf
Applied rewrites55.0%
Applied rewrites89.7%
(FPCore (a b angle)
:precision binary64
(let* ((t_0 (* (* (PI) angle) a)) (t_1 (* (PI) (PI))))
(if (<= b 1.55e+30)
(fma
(* (* (- b a) (+ b a)) (* (* t_1 -3.08641975308642e-5) angle))
angle
(* b b))
(if (<= b 1.4e+139)
(*
(fma
-3.08641975308642e-5
(- (* (* t_1 angle) angle) (/ (* t_0 t_0) (* b b)))
1.0)
(* b b))
(* b b)))))\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left(\mathsf{PI}\left(\right) \cdot angle\right) \cdot a\\
t_1 := \mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\\
\mathbf{if}\;b \leq 1.55 \cdot 10^{+30}:\\
\;\;\;\;\mathsf{fma}\left(\left(\left(b - a\right) \cdot \left(b + a\right)\right) \cdot \left(\left(t\_1 \cdot -3.08641975308642 \cdot 10^{-5}\right) \cdot angle\right), angle, b \cdot b\right)\\
\mathbf{elif}\;b \leq 1.4 \cdot 10^{+139}:\\
\;\;\;\;\mathsf{fma}\left(-3.08641975308642 \cdot 10^{-5}, \left(t\_1 \cdot angle\right) \cdot angle - \frac{t\_0 \cdot t\_0}{b \cdot b}, 1\right) \cdot \left(b \cdot b\right)\\
\mathbf{else}:\\
\;\;\;\;b \cdot b\\
\end{array}
\end{array}
if b < 1.5499999999999999e30Initial program 85.2%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites53.9%
Applied rewrites58.3%
if 1.5499999999999999e30 < b < 1.3999999999999999e139Initial program 60.1%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites36.1%
Taylor expanded in a around inf
Applied rewrites9.9%
Taylor expanded in b around inf
Applied rewrites52.3%
if 1.3999999999999999e139 < b Initial program 95.8%
Taylor expanded in angle around 0
unpow2N/A
lower-*.f6495.9
Applied rewrites95.9%
(FPCore (a b angle)
:precision binary64
(let* ((t_0 (* (PI) (PI))))
(if (<= a 5.8e-54)
(* b b)
(if (<= a 1.15e+142)
(fma
(* (* -3.08641975308642e-5 t_0) (* (- a) a))
(* angle angle)
(* b b))
(* (* (* 3.08641975308642e-5 a) (* a (* t_0 angle))) angle)))))\begin{array}{l}
\\
\begin{array}{l}
t_0 := \mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\\
\mathbf{if}\;a \leq 5.8 \cdot 10^{-54}:\\
\;\;\;\;b \cdot b\\
\mathbf{elif}\;a \leq 1.15 \cdot 10^{+142}:\\
\;\;\;\;\mathsf{fma}\left(\left(-3.08641975308642 \cdot 10^{-5} \cdot t\_0\right) \cdot \left(\left(-a\right) \cdot a\right), angle \cdot angle, b \cdot b\right)\\
\mathbf{else}:\\
\;\;\;\;\left(\left(3.08641975308642 \cdot 10^{-5} \cdot a\right) \cdot \left(a \cdot \left(t\_0 \cdot angle\right)\right)\right) \cdot angle\\
\end{array}
\end{array}
if a < 5.80000000000000029e-54Initial program 82.4%
Taylor expanded in angle around 0
unpow2N/A
lower-*.f6465.8
Applied rewrites65.8%
if 5.80000000000000029e-54 < a < 1.15000000000000001e142Initial program 76.1%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites33.4%
Taylor expanded in a around inf
Applied rewrites72.2%
if 1.15000000000000001e142 < a Initial program 97.5%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites36.4%
Taylor expanded in a around inf
Applied rewrites53.9%
Applied rewrites66.8%
(FPCore (a b angle)
:precision binary64
(if (<= a 5.8e-54)
(* b b)
(if (<= a 1.15e+142)
(fma
(* (* (* 3.08641975308642e-5 (* a a)) (PI)) (PI))
(* angle angle)
(* b b))
(* (* (* 3.08641975308642e-5 a) (* a (* (* (PI) (PI)) angle))) angle))))\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;a \leq 5.8 \cdot 10^{-54}:\\
\;\;\;\;b \cdot b\\
\mathbf{elif}\;a \leq 1.15 \cdot 10^{+142}:\\
\;\;\;\;\mathsf{fma}\left(\left(\left(3.08641975308642 \cdot 10^{-5} \cdot \left(a \cdot a\right)\right) \cdot \mathsf{PI}\left(\right)\right) \cdot \mathsf{PI}\left(\right), angle \cdot angle, b \cdot b\right)\\
\mathbf{else}:\\
\;\;\;\;\left(\left(3.08641975308642 \cdot 10^{-5} \cdot a\right) \cdot \left(a \cdot \left(\left(\mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\right) \cdot angle\right)\right)\right) \cdot angle\\
\end{array}
\end{array}
if a < 5.80000000000000029e-54Initial program 82.4%
Taylor expanded in angle around 0
unpow2N/A
lower-*.f6465.8
Applied rewrites65.8%
if 5.80000000000000029e-54 < a < 1.15000000000000001e142Initial program 76.1%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites33.4%
Taylor expanded in a around inf
Applied rewrites72.2%
if 1.15000000000000001e142 < a Initial program 97.5%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites36.4%
Taylor expanded in a around inf
Applied rewrites53.9%
Applied rewrites66.8%
(FPCore (a b angle)
:precision binary64
(if (<= b 3.9e+32)
(fma
(* (* (- b a) (+ b a)) (* (* (* (PI) (PI)) -3.08641975308642e-5) angle))
angle
(* b b))
(* b b)))\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;b \leq 3.9 \cdot 10^{+32}:\\
\;\;\;\;\mathsf{fma}\left(\left(\left(b - a\right) \cdot \left(b + a\right)\right) \cdot \left(\left(\left(\mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\right) \cdot -3.08641975308642 \cdot 10^{-5}\right) \cdot angle\right), angle, b \cdot b\right)\\
\mathbf{else}:\\
\;\;\;\;b \cdot b\\
\end{array}
\end{array}
if b < 3.8999999999999999e32Initial program 84.9%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites53.6%
Applied rewrites58.0%
if 3.8999999999999999e32 < b Initial program 81.2%
Taylor expanded in angle around 0
unpow2N/A
lower-*.f6474.0
Applied rewrites74.0%
(FPCore (a b angle) :precision binary64 (if (<= a 2.2e+79) (* b b) (* (* (* 3.08641975308642e-5 a) (* a (* (* (PI) (PI)) angle))) angle)))
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;a \leq 2.2 \cdot 10^{+79}:\\
\;\;\;\;b \cdot b\\
\mathbf{else}:\\
\;\;\;\;\left(\left(3.08641975308642 \cdot 10^{-5} \cdot a\right) \cdot \left(a \cdot \left(\left(\mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\right) \cdot angle\right)\right)\right) \cdot angle\\
\end{array}
\end{array}
if a < 2.1999999999999999e79Initial program 81.7%
Taylor expanded in angle around 0
unpow2N/A
lower-*.f6465.5
Applied rewrites65.5%
if 2.1999999999999999e79 < a Initial program 92.2%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites34.7%
Taylor expanded in a around inf
Applied rewrites53.5%
Applied rewrites63.0%
(FPCore (a b angle) :precision binary64 (if (<= a 4.3e+141) (* b b) (* (* 3.08641975308642e-5 (* a a)) (* (* (* (PI) (PI)) angle) angle))))
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;a \leq 4.3 \cdot 10^{+141}:\\
\;\;\;\;b \cdot b\\
\mathbf{else}:\\
\;\;\;\;\left(3.08641975308642 \cdot 10^{-5} \cdot \left(a \cdot a\right)\right) \cdot \left(\left(\left(\mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\right) \cdot angle\right) \cdot angle\right)\\
\end{array}
\end{array}
if a < 4.2999999999999999e141Initial program 81.4%
Taylor expanded in angle around 0
unpow2N/A
lower-*.f6464.8
Applied rewrites64.8%
if 4.2999999999999999e141 < a Initial program 97.5%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites36.4%
Taylor expanded in a around inf
Applied rewrites53.9%
(FPCore (a b angle) :precision binary64 (* b b))
double code(double a, double b, double angle) {
return b * b;
}
real(8) function code(a, b, angle)
real(8), intent (in) :: a
real(8), intent (in) :: b
real(8), intent (in) :: angle
code = b * b
end function
public static double code(double a, double b, double angle) {
return b * b;
}
def code(a, b, angle): return b * b
function code(a, b, angle) return Float64(b * b) end
function tmp = code(a, b, angle) tmp = b * b; end
code[a_, b_, angle_] := N[(b * b), $MachinePrecision]
\begin{array}{l}
\\
b \cdot b
\end{array}
Initial program 83.9%
Taylor expanded in angle around 0
unpow2N/A
lower-*.f6459.3
Applied rewrites59.3%
herbie shell --seed 2024337
(FPCore (a b angle)
:name "ab-angle->ABCF A"
:precision binary64
(+ (pow (* a (sin (* (/ angle 180.0) (PI)))) 2.0) (pow (* b (cos (* (/ angle 180.0) (PI)))) 2.0)))