
(FPCore (z)
:precision binary64
(let* ((t_0 (- (- 1.0 z) 1.0)) (t_1 (+ t_0 7.0)) (t_2 (+ t_1 0.5)))
(*
(/ (PI) (sin (* (PI) z)))
(*
(* (* (sqrt (* (PI) 2.0)) (pow t_2 (+ t_0 0.5))) (exp (- t_2)))
(+
(+
(+
(+
(+
(+
(+
(+ 0.9999999999998099 (/ 676.5203681218851 (+ t_0 1.0)))
(/ -1259.1392167224028 (+ t_0 2.0)))
(/ 771.3234287776531 (+ t_0 3.0)))
(/ -176.6150291621406 (+ t_0 4.0)))
(/ 12.507343278686905 (+ t_0 5.0)))
(/ -0.13857109526572012 (+ t_0 6.0)))
(/ 9.984369578019572e-6 t_1))
(/ 1.5056327351493116e-7 (+ t_0 8.0)))))))\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left(1 - z\right) - 1\\
t_1 := t\_0 + 7\\
t_2 := t\_1 + 0.5\\
\frac{\mathsf{PI}\left(\right)}{\sin \left(\mathsf{PI}\left(\right) \cdot z\right)} \cdot \left(\left(\left(\sqrt{\mathsf{PI}\left(\right) \cdot 2} \cdot {t\_2}^{\left(t\_0 + 0.5\right)}\right) \cdot e^{-t\_2}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{t\_0 + 1}\right) + \frac{-1259.1392167224028}{t\_0 + 2}\right) + \frac{771.3234287776531}{t\_0 + 3}\right) + \frac{-176.6150291621406}{t\_0 + 4}\right) + \frac{12.507343278686905}{t\_0 + 5}\right) + \frac{-0.13857109526572012}{t\_0 + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{t\_1}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{t\_0 + 8}\right)\right)
\end{array}
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 9 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (z)
:precision binary64
(let* ((t_0 (- (- 1.0 z) 1.0)) (t_1 (+ t_0 7.0)) (t_2 (+ t_1 0.5)))
(*
(/ (PI) (sin (* (PI) z)))
(*
(* (* (sqrt (* (PI) 2.0)) (pow t_2 (+ t_0 0.5))) (exp (- t_2)))
(+
(+
(+
(+
(+
(+
(+
(+ 0.9999999999998099 (/ 676.5203681218851 (+ t_0 1.0)))
(/ -1259.1392167224028 (+ t_0 2.0)))
(/ 771.3234287776531 (+ t_0 3.0)))
(/ -176.6150291621406 (+ t_0 4.0)))
(/ 12.507343278686905 (+ t_0 5.0)))
(/ -0.13857109526572012 (+ t_0 6.0)))
(/ 9.984369578019572e-6 t_1))
(/ 1.5056327351493116e-7 (+ t_0 8.0)))))))\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left(1 - z\right) - 1\\
t_1 := t\_0 + 7\\
t_2 := t\_1 + 0.5\\
\frac{\mathsf{PI}\left(\right)}{\sin \left(\mathsf{PI}\left(\right) \cdot z\right)} \cdot \left(\left(\left(\sqrt{\mathsf{PI}\left(\right) \cdot 2} \cdot {t\_2}^{\left(t\_0 + 0.5\right)}\right) \cdot e^{-t\_2}\right) \cdot \left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 + \frac{676.5203681218851}{t\_0 + 1}\right) + \frac{-1259.1392167224028}{t\_0 + 2}\right) + \frac{771.3234287776531}{t\_0 + 3}\right) + \frac{-176.6150291621406}{t\_0 + 4}\right) + \frac{12.507343278686905}{t\_0 + 5}\right) + \frac{-0.13857109526572012}{t\_0 + 6}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{t\_1}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{t\_0 + 8}\right)\right)
\end{array}
\end{array}
(FPCore (z)
:precision binary64
(let* ((t_0 (* (log (* 2.0 (PI))) 0.5))
(t_1 (- (- 1.0 z) 1.0))
(t_2
(fma (- 1.5 (- z -1.0)) (log1p (- (- z) -6.5)) (+ (+ -6.5 z) -1.0)))
(t_3 (- t_0 t_2)))
(*
(*
(+
(/ 1.5056327351493116e-7 (+ 8.0 t_1))
(+
(/ 9.984369578019572e-6 (+ 7.0 t_1))
(+
(/ -0.13857109526572012 (+ 6.0 t_1))
(+
(/ 12.507343278686905 (+ 5.0 t_1))
(+
(/ -176.6150291621406 (+ 4.0 t_1))
(+
(/ 771.3234287776531 (+ 3.0 t_1))
(+
(/ -1259.1392167224028 (+ t_1 2.0))
(+ (/ 676.5203681218851 (- t_1 -1.0)) 0.9999999999998099))))))))
(/ (exp (/ (pow t_0 2.0) t_3)) (exp (/ (pow t_2 2.0) t_3))))
(/ (PI) (sin (* z (PI)))))))\begin{array}{l}
\\
\begin{array}{l}
t_0 := \log \left(2 \cdot \mathsf{PI}\left(\right)\right) \cdot 0.5\\
t_1 := \left(1 - z\right) - 1\\
t_2 := \mathsf{fma}\left(1.5 - \left(z - -1\right), \mathsf{log1p}\left(\left(-z\right) - -6.5\right), \left(-6.5 + z\right) + -1\right)\\
t_3 := t\_0 - t\_2\\
\left(\left(\frac{1.5056327351493116 \cdot 10^{-7}}{8 + t\_1} + \left(\frac{9.984369578019572 \cdot 10^{-6}}{7 + t\_1} + \left(\frac{-0.13857109526572012}{6 + t\_1} + \left(\frac{12.507343278686905}{5 + t\_1} + \left(\frac{-176.6150291621406}{4 + t\_1} + \left(\frac{771.3234287776531}{3 + t\_1} + \left(\frac{-1259.1392167224028}{t\_1 + 2} + \left(\frac{676.5203681218851}{t\_1 - -1} + 0.9999999999998099\right)\right)\right)\right)\right)\right)\right)\right) \cdot \frac{e^{\frac{{t\_0}^{2}}{t\_3}}}{e^{\frac{{t\_2}^{2}}{t\_3}}}\right) \cdot \frac{\mathsf{PI}\left(\right)}{\sin \left(z \cdot \mathsf{PI}\left(\right)\right)}
\end{array}
\end{array}
Initial program 96.5%
lift-*.f64N/A
lift-*.f64N/A
associate-*l*N/A
lift-sqrt.f64N/A
pow1/2N/A
pow-to-expN/A
lift-pow.f64N/A
pow-to-expN/A
lift-exp.f64N/A
prod-expN/A
Applied rewrites97.7%
Applied rewrites99.1%
Final simplification99.1%
(FPCore (z)
:precision binary64
(let* ((t_0 (- (- 1.0 z) 1.0))
(t_1 (* (log (* 2.0 (PI))) 0.5))
(t_2 (- (- 1.0 z) 0.5))
(t_3 (log (- 7.5 z)))
(t_4 (fma t_2 t_3 (- z 7.5))))
(*
(*
(*
(exp (/ (pow (fma t_2 t_3 (fma (/ -7.5 z) z z)) 2.0) (- t_4 t_1)))
(exp (/ (pow t_1 2.0) (- t_1 t_4))))
(+
(/ 1.5056327351493116e-7 (+ 8.0 t_0))
(+
(/ 9.984369578019572e-6 (+ 7.0 t_0))
(+
(/ -0.13857109526572012 (+ 6.0 t_0))
(+
(/ 12.507343278686905 (+ 5.0 t_0))
(+
(/ -176.6150291621406 (+ 4.0 t_0))
(+
(/ 771.3234287776531 (+ 3.0 t_0))
(+
(/ -1259.1392167224028 (+ t_0 2.0))
(+ (/ 676.5203681218851 (- t_0 -1.0)) 0.9999999999998099)))))))))
(/ (PI) (sin (* z (PI)))))))\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left(1 - z\right) - 1\\
t_1 := \log \left(2 \cdot \mathsf{PI}\left(\right)\right) \cdot 0.5\\
t_2 := \left(1 - z\right) - 0.5\\
t_3 := \log \left(7.5 - z\right)\\
t_4 := \mathsf{fma}\left(t\_2, t\_3, z - 7.5\right)\\
\left(\left(e^{\frac{{\left(\mathsf{fma}\left(t\_2, t\_3, \mathsf{fma}\left(\frac{-7.5}{z}, z, z\right)\right)\right)}^{2}}{t\_4 - t\_1}} \cdot e^{\frac{{t\_1}^{2}}{t\_1 - t\_4}}\right) \cdot \left(\frac{1.5056327351493116 \cdot 10^{-7}}{8 + t\_0} + \left(\frac{9.984369578019572 \cdot 10^{-6}}{7 + t\_0} + \left(\frac{-0.13857109526572012}{6 + t\_0} + \left(\frac{12.507343278686905}{5 + t\_0} + \left(\frac{-176.6150291621406}{4 + t\_0} + \left(\frac{771.3234287776531}{3 + t\_0} + \left(\frac{-1259.1392167224028}{t\_0 + 2} + \left(\frac{676.5203681218851}{t\_0 - -1} + 0.9999999999998099\right)\right)\right)\right)\right)\right)\right)\right)\right) \cdot \frac{\mathsf{PI}\left(\right)}{\sin \left(z \cdot \mathsf{PI}\left(\right)\right)}
\end{array}
\end{array}
Initial program 96.5%
lift-*.f64N/A
lift-*.f64N/A
associate-*l*N/A
lift-sqrt.f64N/A
pow1/2N/A
pow-to-expN/A
lift-pow.f64N/A
pow-to-expN/A
lift-exp.f64N/A
prod-expN/A
Applied rewrites97.7%
Applied rewrites99.1%
Taylor expanded in z around inf
sub-negN/A
metadata-evalN/A
distribute-neg-inN/A
+-commutativeN/A
metadata-evalN/A
sub-negN/A
distribute-rgt-neg-inN/A
sub-negN/A
metadata-evalN/A
distribute-rgt-inN/A
distribute-neg-inN/A
distribute-lft-neg-outN/A
mul-1-negN/A
remove-double-negN/A
lower-fma.f64N/A
associate-*r/N/A
metadata-evalN/A
distribute-neg-fracN/A
metadata-evalN/A
lower-/.f6497.8
Applied rewrites97.8%
Applied rewrites97.8%
Final simplification97.8%
(FPCore (z)
:precision binary64
(let* ((t_0 (- (+ -1.0 z) -1.0))
(t_1 (- (- 1.0 z) 3.0))
(t_2 (- (- 1.0 z) 1.0)))
(*
(*
(-
(-
(-
(-
(-
(-
(-
(/ -1259.1392167224028 (- (/ (pow t_2 2.0) t_1) (/ 4.0 t_1)))
(- (/ 676.5203681218851 (- -1.0 t_2)) 0.9999999999998099))
(/ 771.3234287776531 (- t_0 3.0)))
(/ -176.6150291621406 (- t_0 4.0)))
(/ 12.507343278686905 (- t_0 5.0)))
(/ -0.13857109526572012 (- t_0 6.0)))
(/ 9.984369578019572e-6 (- t_0 7.0)))
(/ 1.5056327351493116e-7 (- t_0 8.0)))
(exp
(fma
(log (* 2.0 (PI)))
0.5
(fma (log (- (- 1.0 z) -6.5)) (- (- 1.0 z) 0.5) (- -6.5 (- 1.0 z))))))
(/ (PI) (sin (* z (PI)))))))\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left(-1 + z\right) - -1\\
t_1 := \left(1 - z\right) - 3\\
t_2 := \left(1 - z\right) - 1\\
\left(\left(\left(\left(\left(\left(\left(\left(\frac{-1259.1392167224028}{\frac{{t\_2}^{2}}{t\_1} - \frac{4}{t\_1}} - \left(\frac{676.5203681218851}{-1 - t\_2} - 0.9999999999998099\right)\right) - \frac{771.3234287776531}{t\_0 - 3}\right) - \frac{-176.6150291621406}{t\_0 - 4}\right) - \frac{12.507343278686905}{t\_0 - 5}\right) - \frac{-0.13857109526572012}{t\_0 - 6}\right) - \frac{9.984369578019572 \cdot 10^{-6}}{t\_0 - 7}\right) - \frac{1.5056327351493116 \cdot 10^{-7}}{t\_0 - 8}\right) \cdot e^{\mathsf{fma}\left(\log \left(2 \cdot \mathsf{PI}\left(\right)\right), 0.5, \mathsf{fma}\left(\log \left(\left(1 - z\right) - -6.5\right), \left(1 - z\right) - 0.5, -6.5 - \left(1 - z\right)\right)\right)}\right) \cdot \frac{\mathsf{PI}\left(\right)}{\sin \left(z \cdot \mathsf{PI}\left(\right)\right)}
\end{array}
\end{array}
Initial program 96.5%
lift-*.f64N/A
lift-*.f64N/A
associate-*l*N/A
lift-sqrt.f64N/A
pow1/2N/A
pow-to-expN/A
lift-pow.f64N/A
pow-to-expN/A
lift-exp.f64N/A
prod-expN/A
Applied rewrites97.7%
lift-+.f64N/A
flip-+N/A
div-subN/A
lower--.f64N/A
lower-/.f64N/A
pow2N/A
lower-pow.f64N/A
lift--.f64N/A
associate--l-N/A
metadata-evalN/A
lower--.f64N/A
lower-/.f64N/A
metadata-evalN/A
lift--.f64N/A
associate--l-N/A
metadata-evalN/A
lower--.f6497.7
Applied rewrites97.7%
Final simplification97.7%
(FPCore (z)
:precision binary64
(let* ((t_0 (- (- 1.0 z) 1.0)))
(*
(*
(+
(+
(+
(+
(+
(+
(-
(+ (/ -1259.1392167224028 (- (- 1.0 z) -1.0)) 0.9999999999998099)
(/ 676.5203681218851 (+ -1.0 z)))
(/ 771.3234287776531 (+ 3.0 t_0)))
(/ -176.6150291621406 (+ 4.0 t_0)))
(/ 12.507343278686905 (+ 5.0 t_0)))
(/ -0.13857109526572012 (+ 6.0 t_0)))
(/ 9.984369578019572e-6 (+ 7.0 t_0)))
(/ 1.5056327351493116e-7 (+ 8.0 t_0)))
(exp
(fma
(log (* 2.0 (PI)))
0.5
(fma (log (- (- 1.0 z) -6.5)) (- (- 1.0 z) 0.5) (- -6.5 (- 1.0 z))))))
(/ (PI) (sin (* z (PI)))))))\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left(1 - z\right) - 1\\
\left(\left(\left(\left(\left(\left(\left(\left(\left(\frac{-1259.1392167224028}{\left(1 - z\right) - -1} + 0.9999999999998099\right) - \frac{676.5203681218851}{-1 + z}\right) + \frac{771.3234287776531}{3 + t\_0}\right) + \frac{-176.6150291621406}{4 + t\_0}\right) + \frac{12.507343278686905}{5 + t\_0}\right) + \frac{-0.13857109526572012}{6 + t\_0}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{7 + t\_0}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{8 + t\_0}\right) \cdot e^{\mathsf{fma}\left(\log \left(2 \cdot \mathsf{PI}\left(\right)\right), 0.5, \mathsf{fma}\left(\log \left(\left(1 - z\right) - -6.5\right), \left(1 - z\right) - 0.5, -6.5 - \left(1 - z\right)\right)\right)}\right) \cdot \frac{\mathsf{PI}\left(\right)}{\sin \left(z \cdot \mathsf{PI}\left(\right)\right)}
\end{array}
\end{array}
Initial program 96.5%
lift-*.f64N/A
lift-*.f64N/A
associate-*l*N/A
lift-sqrt.f64N/A
pow1/2N/A
pow-to-expN/A
lift-pow.f64N/A
pow-to-expN/A
lift-exp.f64N/A
prod-expN/A
Applied rewrites97.7%
lift-+.f64N/A
lift-+.f64N/A
+-commutativeN/A
associate-+l+N/A
lower-+.f64N/A
lift-+.f64N/A
lift--.f64N/A
associate-+l-N/A
metadata-evalN/A
--rgt-identityN/A
lower-+.f6497.7
lift-+.f64N/A
lift--.f64N/A
associate-+l-N/A
metadata-evalN/A
lower--.f6497.7
Applied rewrites97.7%
Final simplification97.7%
(FPCore (z)
:precision binary64
(let* ((t_0 (- (- 1.0 z) 1.0)))
(*
(*
(exp
(fma (log (* 2.0 (PI))) 0.5 (fma (- 0.5 z) (log (- 7.5 z)) (- z 7.5))))
(+
(/ 1.5056327351493116e-7 (+ 8.0 t_0))
(+
(/ 9.984369578019572e-6 (+ 7.0 t_0))
(+
(/ -0.13857109526572012 (+ 6.0 t_0))
(+
(/ 12.507343278686905 (+ 5.0 t_0))
(+
(/ -176.6150291621406 (+ 4.0 t_0))
(+
(/ 771.3234287776531 (+ 3.0 t_0))
(+
(/ -1259.1392167224028 (+ t_0 2.0))
(+ (/ 676.5203681218851 (- t_0 -1.0)) 0.9999999999998099)))))))))
(/ (PI) (sin (* z (PI)))))))\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left(1 - z\right) - 1\\
\left(e^{\mathsf{fma}\left(\log \left(2 \cdot \mathsf{PI}\left(\right)\right), 0.5, \mathsf{fma}\left(0.5 - z, \log \left(7.5 - z\right), z - 7.5\right)\right)} \cdot \left(\frac{1.5056327351493116 \cdot 10^{-7}}{8 + t\_0} + \left(\frac{9.984369578019572 \cdot 10^{-6}}{7 + t\_0} + \left(\frac{-0.13857109526572012}{6 + t\_0} + \left(\frac{12.507343278686905}{5 + t\_0} + \left(\frac{-176.6150291621406}{4 + t\_0} + \left(\frac{771.3234287776531}{3 + t\_0} + \left(\frac{-1259.1392167224028}{t\_0 + 2} + \left(\frac{676.5203681218851}{t\_0 - -1} + 0.9999999999998099\right)\right)\right)\right)\right)\right)\right)\right)\right) \cdot \frac{\mathsf{PI}\left(\right)}{\sin \left(z \cdot \mathsf{PI}\left(\right)\right)}
\end{array}
\end{array}
Initial program 96.5%
lift-*.f64N/A
lift-*.f64N/A
associate-*l*N/A
lift-sqrt.f64N/A
pow1/2N/A
pow-to-expN/A
lift-pow.f64N/A
pow-to-expN/A
lift-exp.f64N/A
prod-expN/A
Applied rewrites97.7%
Applied rewrites99.1%
Applied rewrites97.7%
Final simplification97.7%
(FPCore (z)
:precision binary64
(let* ((t_0 (- (+ -1.0 z) -1.0)))
(*
(*
(+
(-
(-
(-
(-
(-
(-
0.9999999999998099
(-
(/ -1259.1392167224028 (- -1.0 (- 1.0 z)))
(/ 676.5203681218851 (- 1.0 z))))
(/ 771.3234287776531 (- t_0 3.0)))
(/ -176.6150291621406 (- t_0 4.0)))
(/ 12.507343278686905 (- t_0 5.0)))
(/ -0.13857109526572012 (- t_0 6.0)))
(/ 9.984369578019572e-6 (- t_0 7.0)))
(/ 1.5056327351493116e-7 (+ 8.0 (- (- 1.0 z) 1.0))))
(*
(exp (- z 7.5))
(* (sqrt (PI)) (* (sqrt 2.0) (pow (- 7.5 z) (- 0.5 z))))))
(/ (PI) (sin (* z (PI)))))))\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left(-1 + z\right) - -1\\
\left(\left(\left(\left(\left(\left(\left(\left(0.9999999999998099 - \left(\frac{-1259.1392167224028}{-1 - \left(1 - z\right)} - \frac{676.5203681218851}{1 - z}\right)\right) - \frac{771.3234287776531}{t\_0 - 3}\right) - \frac{-176.6150291621406}{t\_0 - 4}\right) - \frac{12.507343278686905}{t\_0 - 5}\right) - \frac{-0.13857109526572012}{t\_0 - 6}\right) - \frac{9.984369578019572 \cdot 10^{-6}}{t\_0 - 7}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{8 + \left(\left(1 - z\right) - 1\right)}\right) \cdot \left(e^{z - 7.5} \cdot \left(\sqrt{\mathsf{PI}\left(\right)} \cdot \left(\sqrt{2} \cdot {\left(7.5 - z\right)}^{\left(0.5 - z\right)}\right)\right)\right)\right) \cdot \frac{\mathsf{PI}\left(\right)}{\sin \left(z \cdot \mathsf{PI}\left(\right)\right)}
\end{array}
\end{array}
Initial program 96.5%
Taylor expanded in z around inf
Applied rewrites96.5%
lift-+.f64N/A
lift-+.f64N/A
associate-+l+N/A
+-commutativeN/A
lower-+.f64N/A
Applied rewrites97.6%
Final simplification97.6%
(FPCore (z)
:precision binary64
(let* ((t_0 (sqrt (sqrt (PI)))) (t_1 (- (- 1.0 z) 1.0)))
(*
(*
(+
(+
(+
(+
(+
(+ 47.95075976068351 (/ 771.3234287776531 (+ 3.0 t_1)))
(/ -176.6150291621406 (+ 4.0 t_1)))
(/ 12.507343278686905 (+ 5.0 t_1)))
(/ -0.13857109526572012 (+ 6.0 t_1)))
(/ 9.984369578019572e-6 (+ 7.0 t_1)))
(/ 1.5056327351493116e-7 (+ 8.0 t_1)))
(* (* (sqrt 15.0) (exp -7.5)) (* t_0 t_0)))
(/ (PI) (sin (* z (PI)))))))\begin{array}{l}
\\
\begin{array}{l}
t_0 := \sqrt{\sqrt{\mathsf{PI}\left(\right)}}\\
t_1 := \left(1 - z\right) - 1\\
\left(\left(\left(\left(\left(\left(\left(47.95075976068351 + \frac{771.3234287776531}{3 + t\_1}\right) + \frac{-176.6150291621406}{4 + t\_1}\right) + \frac{12.507343278686905}{5 + t\_1}\right) + \frac{-0.13857109526572012}{6 + t\_1}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{7 + t\_1}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{8 + t\_1}\right) \cdot \left(\left(\sqrt{15} \cdot e^{-7.5}\right) \cdot \left(t\_0 \cdot t\_0\right)\right)\right) \cdot \frac{\mathsf{PI}\left(\right)}{\sin \left(z \cdot \mathsf{PI}\left(\right)\right)}
\end{array}
\end{array}
Initial program 96.5%
Taylor expanded in z around 0
*-commutativeN/A
lower-*.f64N/A
*-commutativeN/A
lower-*.f64N/A
*-commutativeN/A
lower-*.f64N/A
lower-sqrt.f64N/A
lower-sqrt.f64N/A
lower-exp.f64N/A
lower-sqrt.f64N/A
lower-PI.f6494.5
Applied rewrites94.5%
Taylor expanded in z around 0
Applied rewrites95.7%
Applied rewrites95.7%
Applied rewrites96.5%
Final simplification96.5%
(FPCore (z)
:precision binary64
(let* ((t_0 (- (- 1.0 z) 1.0)))
(*
(*
(+
(+
(+
(+
(+
(/ -176.6150291621406 4.0)
(+ 47.95075976068351 (/ 771.3234287776531 (+ 3.0 t_0))))
(/ 12.507343278686905 (+ 5.0 t_0)))
(/ -0.13857109526572012 (+ 6.0 t_0)))
(/ 9.984369578019572e-6 (+ 7.0 t_0)))
(/ 1.5056327351493116e-7 (+ 8.0 t_0)))
(* (* (sqrt 15.0) (exp -7.5)) (sqrt (PI))))
(/ (PI) (sin (* z (PI)))))))\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left(1 - z\right) - 1\\
\left(\left(\left(\left(\left(\left(\frac{-176.6150291621406}{4} + \left(47.95075976068351 + \frac{771.3234287776531}{3 + t\_0}\right)\right) + \frac{12.507343278686905}{5 + t\_0}\right) + \frac{-0.13857109526572012}{6 + t\_0}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{7 + t\_0}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{8 + t\_0}\right) \cdot \left(\left(\sqrt{15} \cdot e^{-7.5}\right) \cdot \sqrt{\mathsf{PI}\left(\right)}\right)\right) \cdot \frac{\mathsf{PI}\left(\right)}{\sin \left(z \cdot \mathsf{PI}\left(\right)\right)}
\end{array}
\end{array}
Initial program 96.5%
Taylor expanded in z around 0
*-commutativeN/A
lower-*.f64N/A
*-commutativeN/A
lower-*.f64N/A
*-commutativeN/A
lower-*.f64N/A
lower-sqrt.f64N/A
lower-sqrt.f64N/A
lower-exp.f64N/A
lower-sqrt.f64N/A
lower-PI.f6494.5
Applied rewrites94.5%
Taylor expanded in z around 0
Applied rewrites95.7%
Applied rewrites95.7%
Taylor expanded in z around 0
Applied rewrites95.7%
Final simplification95.7%
(FPCore (z)
:precision binary64
(let* ((t_0 (- (- 1.0 z) 1.0)))
(*
(*
(+
(+
(+
(+
(+
(+ (/ 771.3234287776531 3.0) 47.95075976068351)
(/ -176.6150291621406 (+ 4.0 t_0)))
(/ 12.507343278686905 (+ 5.0 t_0)))
(/ -0.13857109526572012 (+ 6.0 t_0)))
(/ 9.984369578019572e-6 (+ 7.0 t_0)))
(/ 1.5056327351493116e-7 (+ 8.0 t_0)))
(* (* (sqrt 15.0) (exp -7.5)) (sqrt (PI))))
(/ (PI) (sin (* z (PI)))))))\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left(1 - z\right) - 1\\
\left(\left(\left(\left(\left(\left(\left(\frac{771.3234287776531}{3} + 47.95075976068351\right) + \frac{-176.6150291621406}{4 + t\_0}\right) + \frac{12.507343278686905}{5 + t\_0}\right) + \frac{-0.13857109526572012}{6 + t\_0}\right) + \frac{9.984369578019572 \cdot 10^{-6}}{7 + t\_0}\right) + \frac{1.5056327351493116 \cdot 10^{-7}}{8 + t\_0}\right) \cdot \left(\left(\sqrt{15} \cdot e^{-7.5}\right) \cdot \sqrt{\mathsf{PI}\left(\right)}\right)\right) \cdot \frac{\mathsf{PI}\left(\right)}{\sin \left(z \cdot \mathsf{PI}\left(\right)\right)}
\end{array}
\end{array}
Initial program 96.5%
Taylor expanded in z around 0
*-commutativeN/A
lower-*.f64N/A
*-commutativeN/A
lower-*.f64N/A
*-commutativeN/A
lower-*.f64N/A
lower-sqrt.f64N/A
lower-sqrt.f64N/A
lower-exp.f64N/A
lower-sqrt.f64N/A
lower-PI.f6494.5
Applied rewrites94.5%
Taylor expanded in z around 0
Applied rewrites95.7%
Applied rewrites95.7%
Taylor expanded in z around 0
Applied rewrites95.7%
Final simplification95.7%
herbie shell --seed 2024308
(FPCore (z)
:name "Jmat.Real.gamma, branch z less than 0.5"
:precision binary64
:pre (<= z 0.5)
(* (/ (PI) (sin (* (PI) z))) (* (* (* (sqrt (* (PI) 2.0)) (pow (+ (+ (- (- 1.0 z) 1.0) 7.0) 0.5) (+ (- (- 1.0 z) 1.0) 0.5))) (exp (- (+ (+ (- (- 1.0 z) 1.0) 7.0) 0.5)))) (+ (+ (+ (+ (+ (+ (+ (+ 0.9999999999998099 (/ 676.5203681218851 (+ (- (- 1.0 z) 1.0) 1.0))) (/ -1259.1392167224028 (+ (- (- 1.0 z) 1.0) 2.0))) (/ 771.3234287776531 (+ (- (- 1.0 z) 1.0) 3.0))) (/ -176.6150291621406 (+ (- (- 1.0 z) 1.0) 4.0))) (/ 12.507343278686905 (+ (- (- 1.0 z) 1.0) 5.0))) (/ -0.13857109526572012 (+ (- (- 1.0 z) 1.0) 6.0))) (/ 9.984369578019572e-6 (+ (- (- 1.0 z) 1.0) 7.0))) (/ 1.5056327351493116e-7 (+ (- (- 1.0 z) 1.0) 8.0))))))