
(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 11 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 (+ (pow (* a (sin (* (/ angle 180.0) (PI)))) 2.0) (pow (* b 1.0) 2.0)))
\begin{array}{l}
\\
{\left(a \cdot \sin \left(\frac{angle}{180} \cdot \mathsf{PI}\left(\right)\right)\right)}^{2} + {\left(b \cdot 1\right)}^{2}
\end{array}
Initial program 79.8%
Taylor expanded in angle around 0
Applied rewrites79.9%
(FPCore (a b angle)
:precision binary64
(let* ((t_0 (* (* 0.005555555555555556 (PI)) angle)))
(if (<= b 1.02e-159)
(pow (* (sin t_0) a) 2.0)
(+ (pow (* a t_0) 2.0) (pow (* b 1.0) 2.0)))))\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left(0.005555555555555556 \cdot \mathsf{PI}\left(\right)\right) \cdot angle\\
\mathbf{if}\;b \leq 1.02 \cdot 10^{-159}:\\
\;\;\;\;{\left(\sin t\_0 \cdot a\right)}^{2}\\
\mathbf{else}:\\
\;\;\;\;{\left(a \cdot t\_0\right)}^{2} + {\left(b \cdot 1\right)}^{2}\\
\end{array}
\end{array}
if b < 1.02e-159Initial program 79.3%
Taylor expanded in a around inf
Applied rewrites41.0%
Applied rewrites47.9%
if 1.02e-159 < b Initial program 80.6%
Taylor expanded in angle around 0
Applied rewrites80.7%
Taylor expanded in angle around 0
Applied rewrites78.3%
(FPCore (a b angle)
:precision binary64
(if (<= b 1.7e-160)
(pow (* (sin (* (* 0.005555555555555556 (PI)) angle)) a) 2.0)
(+
(pow (* (* (* (PI) a) 0.005555555555555556) angle) 2.0)
(pow (* b 1.0) 2.0))))\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;b \leq 1.7 \cdot 10^{-160}:\\
\;\;\;\;{\left(\sin \left(\left(0.005555555555555556 \cdot \mathsf{PI}\left(\right)\right) \cdot angle\right) \cdot a\right)}^{2}\\
\mathbf{else}:\\
\;\;\;\;{\left(\left(\left(\mathsf{PI}\left(\right) \cdot a\right) \cdot 0.005555555555555556\right) \cdot angle\right)}^{2} + {\left(b \cdot 1\right)}^{2}\\
\end{array}
\end{array}
if b < 1.70000000000000011e-160Initial program 79.1%
Taylor expanded in a around inf
Applied rewrites41.3%
Applied rewrites47.6%
if 1.70000000000000011e-160 < b Initial program 80.7%
Taylor expanded in angle around 0
Applied rewrites80.9%
Taylor expanded in angle around 0
Applied rewrites78.5%
(FPCore (a b angle) :precision binary64 (fma b b (pow (* (sin (* (PI) (/ angle 180.0))) a) 2.0)))
\begin{array}{l}
\\
\mathsf{fma}\left(b, b, {\left(\sin \left(\mathsf{PI}\left(\right) \cdot \frac{angle}{180}\right) \cdot a\right)}^{2}\right)
\end{array}
Initial program 79.8%
Taylor expanded in angle around 0
Applied rewrites79.9%
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 rewrites79.9%
Taylor expanded in angle around 0
Applied rewrites79.9%
(FPCore (a b angle)
:precision binary64
(let* ((t_0 (* (* 0.005555555555555556 (PI)) angle)))
(if (<= b 1.02e-159)
(pow (* (sin t_0) a) 2.0)
(fma b b (pow (* t_0 a) 2.0)))))\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left(0.005555555555555556 \cdot \mathsf{PI}\left(\right)\right) \cdot angle\\
\mathbf{if}\;b \leq 1.02 \cdot 10^{-159}:\\
\;\;\;\;{\left(\sin t\_0 \cdot a\right)}^{2}\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(b, b, {\left(t\_0 \cdot a\right)}^{2}\right)\\
\end{array}
\end{array}
if b < 1.02e-159Initial program 79.3%
Taylor expanded in a around inf
Applied rewrites41.0%
Applied rewrites47.9%
if 1.02e-159 < b Initial program 80.6%
Taylor expanded in angle around 0
Applied rewrites80.7%
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 rewrites80.7%
Taylor expanded in angle around 0
Applied rewrites80.7%
Taylor expanded in angle around 0
Applied rewrites78.3%
(FPCore (a b angle) :precision binary64 (if (<= a 2.35e-48) (* b b) (fma b b (pow (* (* (* 0.005555555555555556 (PI)) angle) a) 2.0))))
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;a \leq 2.35 \cdot 10^{-48}:\\
\;\;\;\;b \cdot b\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(b, 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 < 2.3499999999999999e-48Initial program 78.2%
Taylor expanded in angle around 0
Applied rewrites58.2%
if 2.3499999999999999e-48 < a Initial program 84.1%
Taylor expanded in angle around 0
Applied rewrites84.1%
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 rewrites84.1%
Taylor expanded in angle around 0
Applied rewrites84.1%
Taylor expanded in angle around 0
Applied rewrites82.1%
(FPCore (a b angle)
:precision binary64
(let* ((t_0 (* (PI) (PI))))
(if (<= a 2.35e-48)
(* b b)
(if (<= a 7.6e+184)
(fma b b (* (* (* angle angle) 3.08641975308642e-5) (* (* t_0 a) a)))
(fma
(* (* a angle) (* a angle))
(* -3.08641975308642e-5 (- (* (* (/ b a) b) (/ t_0 a)) t_0))
(* b b))))))\begin{array}{l}
\\
\begin{array}{l}
t_0 := \mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\\
\mathbf{if}\;a \leq 2.35 \cdot 10^{-48}:\\
\;\;\;\;b \cdot b\\
\mathbf{elif}\;a \leq 7.6 \cdot 10^{+184}:\\
\;\;\;\;\mathsf{fma}\left(b, b, \left(\left(angle \cdot angle\right) \cdot 3.08641975308642 \cdot 10^{-5}\right) \cdot \left(\left(t\_0 \cdot a\right) \cdot a\right)\right)\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(\left(a \cdot angle\right) \cdot \left(a \cdot angle\right), -3.08641975308642 \cdot 10^{-5} \cdot \left(\left(\frac{b}{a} \cdot b\right) \cdot \frac{t\_0}{a} - t\_0\right), b \cdot b\right)\\
\end{array}
\end{array}
if a < 2.3499999999999999e-48Initial program 78.2%
Taylor expanded in angle around 0
Applied rewrites58.2%
if 2.3499999999999999e-48 < a < 7.6000000000000002e184Initial program 76.1%
Taylor expanded in angle around 0
Applied rewrites76.2%
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 rewrites76.1%
Taylor expanded in angle around 0
Applied rewrites76.1%
Taylor expanded in angle around 0
Applied rewrites66.6%
if 7.6000000000000002e184 < a Initial program 99.8%
Taylor expanded in a around inf
Applied rewrites78.7%
Taylor expanded in angle around 0
Applied rewrites26.1%
Taylor expanded in angle around 0
Applied rewrites90.8%
(FPCore (a b angle)
:precision binary64
(let* ((t_0 (* (PI) (PI))))
(if (<= a 2.35e-48)
(* b b)
(if (<= a 5e+185)
(fma b b (* (* (* angle angle) 3.08641975308642e-5) (* (* t_0 a) a)))
(fma
(* a (* (* angle angle) a))
(* -3.08641975308642e-5 (- (* (/ t_0 a) (* (/ b a) b)) t_0))
(* b b))))))\begin{array}{l}
\\
\begin{array}{l}
t_0 := \mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\\
\mathbf{if}\;a \leq 2.35 \cdot 10^{-48}:\\
\;\;\;\;b \cdot b\\
\mathbf{elif}\;a \leq 5 \cdot 10^{+185}:\\
\;\;\;\;\mathsf{fma}\left(b, b, \left(\left(angle \cdot angle\right) \cdot 3.08641975308642 \cdot 10^{-5}\right) \cdot \left(\left(t\_0 \cdot a\right) \cdot a\right)\right)\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(a \cdot \left(\left(angle \cdot angle\right) \cdot a\right), -3.08641975308642 \cdot 10^{-5} \cdot \left(\frac{t\_0}{a} \cdot \left(\frac{b}{a} \cdot b\right) - t\_0\right), b \cdot b\right)\\
\end{array}
\end{array}
if a < 2.3499999999999999e-48Initial program 78.2%
Taylor expanded in angle around 0
Applied rewrites58.2%
if 2.3499999999999999e-48 < a < 4.9999999999999999e185Initial program 76.1%
Taylor expanded in angle around 0
Applied rewrites76.2%
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 rewrites76.1%
Taylor expanded in angle around 0
Applied rewrites76.1%
Taylor expanded in angle around 0
Applied rewrites66.6%
if 4.9999999999999999e185 < a Initial program 99.8%
Taylor expanded in a around inf
Applied rewrites78.7%
Taylor expanded in angle around 0
Applied rewrites74.5%
(FPCore (a b angle)
:precision binary64
(if (<= b 9.5e+134)
(fma
b
b
(* (* (* angle angle) 3.08641975308642e-5) (* (* (* (PI) (PI)) a) a)))
(* b b)))\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;b \leq 9.5 \cdot 10^{+134}:\\
\;\;\;\;\mathsf{fma}\left(b, b, \left(\left(angle \cdot angle\right) \cdot 3.08641975308642 \cdot 10^{-5}\right) \cdot \left(\left(\left(\mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\right) \cdot a\right) \cdot a\right)\right)\\
\mathbf{else}:\\
\;\;\;\;b \cdot b\\
\end{array}
\end{array}
if b < 9.5000000000000004e134Initial program 77.3%
Taylor expanded in angle around 0
Applied rewrites77.4%
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 rewrites77.4%
Taylor expanded in angle around 0
Applied rewrites77.4%
Taylor expanded in angle around 0
Applied rewrites62.5%
if 9.5000000000000004e134 < b Initial program 95.3%
Taylor expanded in angle around 0
Applied rewrites95.3%
(FPCore (a b angle) :precision binary64 (if (<= a 2.9e+159) (* b b) (* (* (* angle angle) 3.08641975308642e-5) (* (* (* (PI) (PI)) a) a))))
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;a \leq 2.9 \cdot 10^{+159}:\\
\;\;\;\;b \cdot b\\
\mathbf{else}:\\
\;\;\;\;\left(\left(angle \cdot angle\right) \cdot 3.08641975308642 \cdot 10^{-5}\right) \cdot \left(\left(\left(\mathsf{PI}\left(\right) \cdot \mathsf{PI}\left(\right)\right) \cdot a\right) \cdot a\right)\\
\end{array}
\end{array}
if a < 2.90000000000000014e159Initial program 77.2%
Taylor expanded in angle around 0
Applied rewrites58.0%
if 2.90000000000000014e159 < a Initial program 99.8%
Taylor expanded in a around inf
Applied rewrites76.2%
Taylor expanded in angle around 0
Applied rewrites76.2%
(FPCore (a b angle) :precision binary64 (* b b))
double code(double a, double b, double angle) {
return b * b;
}
module fmin_fmax_functions
implicit none
private
public fmax
public fmin
interface fmax
module procedure fmax88
module procedure fmax44
module procedure fmax84
module procedure fmax48
end interface
interface fmin
module procedure fmin88
module procedure fmin44
module procedure fmin84
module procedure fmin48
end interface
contains
real(8) function fmax88(x, y) result (res)
real(8), intent (in) :: x
real(8), intent (in) :: y
res = merge(y, merge(x, max(x, y), y /= y), x /= x)
end function
real(4) function fmax44(x, y) result (res)
real(4), intent (in) :: x
real(4), intent (in) :: y
res = merge(y, merge(x, max(x, y), y /= y), x /= x)
end function
real(8) function fmax84(x, y) result(res)
real(8), intent (in) :: x
real(4), intent (in) :: y
res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
end function
real(8) function fmax48(x, y) result(res)
real(4), intent (in) :: x
real(8), intent (in) :: y
res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
end function
real(8) function fmin88(x, y) result (res)
real(8), intent (in) :: x
real(8), intent (in) :: y
res = merge(y, merge(x, min(x, y), y /= y), x /= x)
end function
real(4) function fmin44(x, y) result (res)
real(4), intent (in) :: x
real(4), intent (in) :: y
res = merge(y, merge(x, min(x, y), y /= y), x /= x)
end function
real(8) function fmin84(x, y) result(res)
real(8), intent (in) :: x
real(4), intent (in) :: y
res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
end function
real(8) function fmin48(x, y) result(res)
real(4), intent (in) :: x
real(8), intent (in) :: y
res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
end function
end module
real(8) function code(a, b, angle)
use fmin_fmax_functions
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 79.8%
Taylor expanded in angle around 0
Applied rewrites55.6%
herbie shell --seed 2025026
(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)))