
(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 82.0%
Taylor expanded in angle around 0
Applied rewrites82.5%
lift-+.f64N/A
flip-+N/A
clear-numN/A
lower-/.f64N/A
Applied rewrites82.1%
Applied rewrites82.5%
Taylor expanded in angle around inf
*-commutativeN/A
associate-*r*N/A
*-commutativeN/A
lower-sin.f64N/A
*-commutativeN/A
lower-*.f64N/A
lower-*.f64N/A
lower-PI.f6482.5
Applied rewrites82.5%
(FPCore (a b angle)
:precision binary64
(if (<= a 2.45e-111)
(* b b)
(fma
(* (* 1.0 b) 1.0)
b
(pow
(*
(*
(*
(PI)
(fma
(* -2.8577960676726107e-8 (* angle angle))
(* (PI) (PI))
0.005555555555555556))
angle)
a)
2.0))))\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;a \leq 2.45 \cdot 10^{-111}:\\
\;\;\;\;b \cdot b\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(\left(1 \cdot b\right) \cdot 1, b, {\left(\left(\left(\mathsf{PI}\left(\right) \cdot \mathsf{fma}\left(-2.8577960676726107 \cdot 10^{-8} \cdot \left(angle \cdot angle\right), \mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right), 0.005555555555555556\right)\right) \cdot angle\right) \cdot a\right)}^{2}\right)\\
\end{array}
\end{array}
if a < 2.4500000000000001e-111Initial program 82.3%
Taylor expanded in angle around 0
unpow2N/A
lower-*.f6467.5
Applied rewrites67.5%
if 2.4500000000000001e-111 < a Initial program 81.4%
Taylor expanded in angle around 0
Applied rewrites81.1%
lift-+.f64N/A
flip-+N/A
clear-numN/A
lower-/.f64N/A
Applied rewrites81.1%
Applied rewrites81.1%
Taylor expanded in angle around 0
*-commutativeN/A
*-commutativeN/A
associate-*r*N/A
+-commutativeN/A
lower-*.f64N/A
Applied rewrites77.8%
(FPCore (a b angle)
:precision binary64
(let* ((t_0 (* (* (PI) angle) a)))
(if (<= b 1.6e-132)
(* (pow (* (* a (PI)) angle) 2.0) 3.08641975308642e-5)
(if (<= b 3.1e+95)
(*
(fma
(* t_0 t_0)
(/ 3.08641975308642e-5 (* b b))
(fma (* (* (* angle angle) -3.08641975308642e-5) (PI)) (PI) 1.0))
(* b b))
(* b b)))))\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left(\mathsf{PI}\left(\right) \cdot angle\right) \cdot a\\
\mathbf{if}\;b \leq 1.6 \cdot 10^{-132}:\\
\;\;\;\;{\left(\left(a \cdot \mathsf{PI}\left(\right)\right) \cdot angle\right)}^{2} \cdot 3.08641975308642 \cdot 10^{-5}\\
\mathbf{elif}\;b \leq 3.1 \cdot 10^{+95}:\\
\;\;\;\;\mathsf{fma}\left(t\_0 \cdot t\_0, \frac{3.08641975308642 \cdot 10^{-5}}{b \cdot b}, \mathsf{fma}\left(\left(\left(angle \cdot angle\right) \cdot -3.08641975308642 \cdot 10^{-5}\right) \cdot \mathsf{PI}\left(\right), \mathsf{PI}\left(\right), 1\right)\right) \cdot \left(b \cdot b\right)\\
\mathbf{else}:\\
\;\;\;\;b \cdot b\\
\end{array}
\end{array}
if b < 1.6000000000000001e-132Initial program 78.3%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites36.5%
Taylor expanded in a around inf
Applied rewrites36.6%
Applied rewrites47.6%
if 1.6000000000000001e-132 < b < 3.1000000000000003e95Initial program 79.6%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites54.5%
Taylor expanded in b around inf
Applied rewrites71.9%
if 3.1000000000000003e95 < b Initial program 96.0%
Taylor expanded in angle around 0
unpow2N/A
lower-*.f6491.8
Applied rewrites91.8%
(FPCore (a b angle)
:precision binary64
(let* ((t_0 (* (* (PI) angle) a)))
(if (<= b 1e-134)
(* (* (* (* (* (* (PI) (PI)) a) a) angle) 3.08641975308642e-5) angle)
(if (<= b 3.1e+95)
(*
(fma
(* t_0 t_0)
(/ 3.08641975308642e-5 (* b b))
(fma (* (* (* angle angle) -3.08641975308642e-5) (PI)) (PI) 1.0))
(* b b))
(* b b)))))\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left(\mathsf{PI}\left(\right) \cdot angle\right) \cdot a\\
\mathbf{if}\;b \leq 10^{-134}:\\
\;\;\;\;\left(\left(\left(\left(\left(\mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\right) \cdot a\right) \cdot a\right) \cdot angle\right) \cdot 3.08641975308642 \cdot 10^{-5}\right) \cdot angle\\
\mathbf{elif}\;b \leq 3.1 \cdot 10^{+95}:\\
\;\;\;\;\mathsf{fma}\left(t\_0 \cdot t\_0, \frac{3.08641975308642 \cdot 10^{-5}}{b \cdot b}, \mathsf{fma}\left(\left(\left(angle \cdot angle\right) \cdot -3.08641975308642 \cdot 10^{-5}\right) \cdot \mathsf{PI}\left(\right), \mathsf{PI}\left(\right), 1\right)\right) \cdot \left(b \cdot b\right)\\
\mathbf{else}:\\
\;\;\;\;b \cdot b\\
\end{array}
\end{array}
if b < 1.00000000000000004e-134Initial program 78.5%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites36.9%
Taylor expanded in a around inf
Applied rewrites37.0%
Taylor expanded in a around 0
Applied rewrites42.6%
if 1.00000000000000004e-134 < b < 3.1000000000000003e95Initial program 78.3%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites51.4%
Taylor expanded in b around inf
Applied rewrites70.5%
if 3.1000000000000003e95 < b Initial program 96.0%
Taylor expanded in angle around 0
unpow2N/A
lower-*.f6491.8
Applied rewrites91.8%
(FPCore (a b angle)
:precision binary64
(if (<= b 9.6e+64)
(fma
(*
(*
(fma (* a a) 3.08641975308642e-5 (* (* b b) -3.08641975308642e-5))
angle)
angle)
(* (PI) (PI))
(* b b))
(* b b)))\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;b \leq 9.6 \cdot 10^{+64}:\\
\;\;\;\;\mathsf{fma}\left(\left(\mathsf{fma}\left(a \cdot a, 3.08641975308642 \cdot 10^{-5}, \left(b \cdot b\right) \cdot -3.08641975308642 \cdot 10^{-5}\right) \cdot angle\right) \cdot angle, \mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right), b \cdot b\right)\\
\mathbf{else}:\\
\;\;\;\;b \cdot b\\
\end{array}
\end{array}
if b < 9.59999999999999997e64Initial program 78.2%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites38.9%
Applied rewrites42.6%
if 9.59999999999999997e64 < b Initial program 94.9%
Taylor expanded in angle around 0
unpow2N/A
lower-*.f6488.2
Applied rewrites88.2%
(FPCore (a b angle)
:precision binary64
(if (<= b 9.6e+64)
(fma
(PI)
(*
(PI)
(*
(*
(fma (* a a) 3.08641975308642e-5 (* (* b b) -3.08641975308642e-5))
angle)
angle))
(* b b))
(* b b)))\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;b \leq 9.6 \cdot 10^{+64}:\\
\;\;\;\;\mathsf{fma}\left(\mathsf{PI}\left(\right), \mathsf{PI}\left(\right) \cdot \left(\left(\mathsf{fma}\left(a \cdot a, 3.08641975308642 \cdot 10^{-5}, \left(b \cdot b\right) \cdot -3.08641975308642 \cdot 10^{-5}\right) \cdot angle\right) \cdot angle\right), b \cdot b\right)\\
\mathbf{else}:\\
\;\;\;\;b \cdot b\\
\end{array}
\end{array}
if b < 9.59999999999999997e64Initial program 78.2%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites38.9%
Applied rewrites42.6%
if 9.59999999999999997e64 < b Initial program 94.9%
Taylor expanded in angle around 0
unpow2N/A
lower-*.f6488.2
Applied rewrites88.2%
(FPCore (a b angle)
:precision binary64
(let* ((t_0 (* (PI) (PI))))
(if (<= a 2.1e-111)
(* b b)
(if (<= a 7e+123)
(fma (* t_0 (* 3.08641975308642e-5 (* a a))) (* angle angle) (* b b))
(* (* (* (* (* t_0 a) a) angle) 3.08641975308642e-5) angle)))))\begin{array}{l}
\\
\begin{array}{l}
t_0 := \mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\\
\mathbf{if}\;a \leq 2.1 \cdot 10^{-111}:\\
\;\;\;\;b \cdot b\\
\mathbf{elif}\;a \leq 7 \cdot 10^{+123}:\\
\;\;\;\;\mathsf{fma}\left(t\_0 \cdot \left(3.08641975308642 \cdot 10^{-5} \cdot \left(a \cdot a\right)\right), angle \cdot angle, b \cdot b\right)\\
\mathbf{else}:\\
\;\;\;\;\left(\left(\left(\left(t\_0 \cdot a\right) \cdot a\right) \cdot angle\right) \cdot 3.08641975308642 \cdot 10^{-5}\right) \cdot angle\\
\end{array}
\end{array}
if a < 2.0999999999999999e-111Initial program 82.3%
Taylor expanded in angle around 0
unpow2N/A
lower-*.f6467.5
Applied rewrites67.5%
if 2.0999999999999999e-111 < a < 6.99999999999999999e123Initial program 70.7%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites28.5%
Taylor expanded in a around inf
Applied rewrites60.6%
if 6.99999999999999999e123 < a Initial program 91.2%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites28.7%
Taylor expanded in a around inf
Applied rewrites51.2%
Taylor expanded in a around 0
Applied rewrites61.9%
(FPCore (a b angle)
:precision binary64
(if (<= b 3.9e-160)
(* (* (* (* (* (* (PI) (PI)) a) a) angle) 3.08641975308642e-5) angle)
(if (<= b 1.04e+65)
(fma
(* (* (* 3.08641975308642e-5 (* a a)) (PI)) (PI))
(* angle angle)
(* b b))
(* b b))))\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;b \leq 3.9 \cdot 10^{-160}:\\
\;\;\;\;\left(\left(\left(\left(\left(\mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\right) \cdot a\right) \cdot a\right) \cdot angle\right) \cdot 3.08641975308642 \cdot 10^{-5}\right) \cdot angle\\
\mathbf{elif}\;b \leq 1.04 \cdot 10^{+65}:\\
\;\;\;\;\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}:\\
\;\;\;\;b \cdot b\\
\end{array}
\end{array}
if b < 3.89999999999999989e-160Initial program 78.1%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites36.2%
Taylor expanded in a around inf
Applied rewrites35.9%
Taylor expanded in a around 0
Applied rewrites41.6%
if 3.89999999999999989e-160 < b < 1.03999999999999999e65Initial program 79.1%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites52.6%
Taylor expanded in a around inf
Applied rewrites56.1%
if 1.03999999999999999e65 < b Initial program 94.9%
Taylor expanded in angle around 0
unpow2N/A
lower-*.f6488.2
Applied rewrites88.2%
(FPCore (a b angle) :precision binary64 (if (<= b 2.8e-59) (* (* (* (* (* (* (PI) (PI)) a) a) angle) 3.08641975308642e-5) angle) (* b b)))
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;b \leq 2.8 \cdot 10^{-59}:\\
\;\;\;\;\left(\left(\left(\left(\left(\mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\right) \cdot a\right) \cdot a\right) \cdot angle\right) \cdot 3.08641975308642 \cdot 10^{-5}\right) \cdot angle\\
\mathbf{else}:\\
\;\;\;\;b \cdot b\\
\end{array}
\end{array}
if b < 2.79999999999999981e-59Initial program 78.2%
Taylor expanded in angle around 0
*-commutativeN/A
lower-fma.f64N/A
Applied rewrites37.3%
Taylor expanded in a around inf
Applied rewrites35.9%
Taylor expanded in a around 0
Applied rewrites41.2%
if 2.79999999999999981e-59 < b Initial program 90.9%
Taylor expanded in angle around 0
unpow2N/A
lower-*.f6477.1
Applied rewrites77.1%
(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 82.0%
Taylor expanded in angle around 0
unpow2N/A
lower-*.f6457.6
Applied rewrites57.6%
herbie shell --seed 2024313
(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)))