
(FPCore (x eps) :precision binary64 (- (tan (+ x eps)) (tan x)))
double code(double x, double eps) {
return tan((x + eps)) - tan(x);
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
code = tan((x + eps)) - tan(x)
end function
public static double code(double x, double eps) {
return Math.tan((x + eps)) - Math.tan(x);
}
def code(x, eps): return math.tan((x + eps)) - math.tan(x)
function code(x, eps) return Float64(tan(Float64(x + eps)) - tan(x)) end
function tmp = code(x, eps) tmp = tan((x + eps)) - tan(x); end
code[x_, eps_] := N[(N[Tan[N[(x + eps), $MachinePrecision]], $MachinePrecision] - N[Tan[x], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\tan \left(x + \varepsilon\right) - \tan x
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 12 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x eps) :precision binary64 (- (tan (+ x eps)) (tan x)))
double code(double x, double eps) {
return tan((x + eps)) - tan(x);
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
code = tan((x + eps)) - tan(x)
end function
public static double code(double x, double eps) {
return Math.tan((x + eps)) - Math.tan(x);
}
def code(x, eps): return math.tan((x + eps)) - math.tan(x)
function code(x, eps) return Float64(tan(Float64(x + eps)) - tan(x)) end
function tmp = code(x, eps) tmp = tan((x + eps)) - tan(x); end
code[x_, eps_] := N[(N[Tan[N[(x + eps), $MachinePrecision]], $MachinePrecision] - N[Tan[x], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\tan \left(x + \varepsilon\right) - \tan x
\end{array}
(FPCore (x eps)
:precision binary64
(let* ((t_0 (pow (tan x) 2.0)))
(+
eps
(*
eps
(+
t_0
(*
eps
(+
(+ (tan x) (pow (tan x) 3.0))
(*
eps
(-
(+
(- 0.3333333333333333 (* t_0 -0.3333333333333333))
(* t_0 (+ t_0 1.0)))
(*
eps
(+
(* x (+ -0.3333333333333333 (* (* x x) -1.4444444444444444)))
(* x -0.3333333333333333))))))))))))
double code(double x, double eps) {
double t_0 = pow(tan(x), 2.0);
return eps + (eps * (t_0 + (eps * ((tan(x) + pow(tan(x), 3.0)) + (eps * (((0.3333333333333333 - (t_0 * -0.3333333333333333)) + (t_0 * (t_0 + 1.0))) - (eps * ((x * (-0.3333333333333333 + ((x * x) * -1.4444444444444444))) + (x * -0.3333333333333333)))))))));
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
real(8) :: t_0
t_0 = tan(x) ** 2.0d0
code = eps + (eps * (t_0 + (eps * ((tan(x) + (tan(x) ** 3.0d0)) + (eps * (((0.3333333333333333d0 - (t_0 * (-0.3333333333333333d0))) + (t_0 * (t_0 + 1.0d0))) - (eps * ((x * ((-0.3333333333333333d0) + ((x * x) * (-1.4444444444444444d0)))) + (x * (-0.3333333333333333d0))))))))))
end function
public static double code(double x, double eps) {
double t_0 = Math.pow(Math.tan(x), 2.0);
return eps + (eps * (t_0 + (eps * ((Math.tan(x) + Math.pow(Math.tan(x), 3.0)) + (eps * (((0.3333333333333333 - (t_0 * -0.3333333333333333)) + (t_0 * (t_0 + 1.0))) - (eps * ((x * (-0.3333333333333333 + ((x * x) * -1.4444444444444444))) + (x * -0.3333333333333333)))))))));
}
def code(x, eps): t_0 = math.pow(math.tan(x), 2.0) return eps + (eps * (t_0 + (eps * ((math.tan(x) + math.pow(math.tan(x), 3.0)) + (eps * (((0.3333333333333333 - (t_0 * -0.3333333333333333)) + (t_0 * (t_0 + 1.0))) - (eps * ((x * (-0.3333333333333333 + ((x * x) * -1.4444444444444444))) + (x * -0.3333333333333333)))))))))
function code(x, eps) t_0 = tan(x) ^ 2.0 return Float64(eps + Float64(eps * Float64(t_0 + Float64(eps * Float64(Float64(tan(x) + (tan(x) ^ 3.0)) + Float64(eps * Float64(Float64(Float64(0.3333333333333333 - Float64(t_0 * -0.3333333333333333)) + Float64(t_0 * Float64(t_0 + 1.0))) - Float64(eps * Float64(Float64(x * Float64(-0.3333333333333333 + Float64(Float64(x * x) * -1.4444444444444444))) + Float64(x * -0.3333333333333333)))))))))) end
function tmp = code(x, eps) t_0 = tan(x) ^ 2.0; tmp = eps + (eps * (t_0 + (eps * ((tan(x) + (tan(x) ^ 3.0)) + (eps * (((0.3333333333333333 - (t_0 * -0.3333333333333333)) + (t_0 * (t_0 + 1.0))) - (eps * ((x * (-0.3333333333333333 + ((x * x) * -1.4444444444444444))) + (x * -0.3333333333333333))))))))); end
code[x_, eps_] := Block[{t$95$0 = N[Power[N[Tan[x], $MachinePrecision], 2.0], $MachinePrecision]}, N[(eps + N[(eps * N[(t$95$0 + N[(eps * N[(N[(N[Tan[x], $MachinePrecision] + N[Power[N[Tan[x], $MachinePrecision], 3.0], $MachinePrecision]), $MachinePrecision] + N[(eps * N[(N[(N[(0.3333333333333333 - N[(t$95$0 * -0.3333333333333333), $MachinePrecision]), $MachinePrecision] + N[(t$95$0 * N[(t$95$0 + 1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - N[(eps * N[(N[(x * N[(-0.3333333333333333 + N[(N[(x * x), $MachinePrecision] * -1.4444444444444444), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(x * -0.3333333333333333), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := {\tan x}^{2}\\
\varepsilon + \varepsilon \cdot \left(t\_0 + \varepsilon \cdot \left(\left(\tan x + {\tan x}^{3}\right) + \varepsilon \cdot \left(\left(\left(0.3333333333333333 - t\_0 \cdot -0.3333333333333333\right) + t\_0 \cdot \left(t\_0 + 1\right)\right) - \varepsilon \cdot \left(x \cdot \left(-0.3333333333333333 + \left(x \cdot x\right) \cdot -1.4444444444444444\right) + x \cdot -0.3333333333333333\right)\right)\right)\right)
\end{array}
\end{array}
Initial program 60.4%
Taylor expanded in eps around 0
Simplified100.0%
Applied egg-rr100.0%
Taylor expanded in x around 0
*-lowering-*.f64N/A
sub-negN/A
metadata-evalN/A
+-lowering-+.f64N/A
*-commutativeN/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64100.0%
Simplified100.0%
Taylor expanded in x around 0
*-commutativeN/A
*-lowering-*.f64100.0%
Simplified100.0%
Final simplification100.0%
(FPCore (x eps)
:precision binary64
(+
eps
(*
eps
(+
(pow (tan x) 2.0)
(* eps (+ (+ (tan x) (pow (tan x) 3.0)) (* eps 0.3333333333333333)))))))
double code(double x, double eps) {
return eps + (eps * (pow(tan(x), 2.0) + (eps * ((tan(x) + pow(tan(x), 3.0)) + (eps * 0.3333333333333333)))));
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
code = eps + (eps * ((tan(x) ** 2.0d0) + (eps * ((tan(x) + (tan(x) ** 3.0d0)) + (eps * 0.3333333333333333d0)))))
end function
public static double code(double x, double eps) {
return eps + (eps * (Math.pow(Math.tan(x), 2.0) + (eps * ((Math.tan(x) + Math.pow(Math.tan(x), 3.0)) + (eps * 0.3333333333333333)))));
}
def code(x, eps): return eps + (eps * (math.pow(math.tan(x), 2.0) + (eps * ((math.tan(x) + math.pow(math.tan(x), 3.0)) + (eps * 0.3333333333333333)))))
function code(x, eps) return Float64(eps + Float64(eps * Float64((tan(x) ^ 2.0) + Float64(eps * Float64(Float64(tan(x) + (tan(x) ^ 3.0)) + Float64(eps * 0.3333333333333333)))))) end
function tmp = code(x, eps) tmp = eps + (eps * ((tan(x) ^ 2.0) + (eps * ((tan(x) + (tan(x) ^ 3.0)) + (eps * 0.3333333333333333))))); end
code[x_, eps_] := N[(eps + N[(eps * N[(N[Power[N[Tan[x], $MachinePrecision], 2.0], $MachinePrecision] + N[(eps * N[(N[(N[Tan[x], $MachinePrecision] + N[Power[N[Tan[x], $MachinePrecision], 3.0], $MachinePrecision]), $MachinePrecision] + N[(eps * 0.3333333333333333), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\varepsilon + \varepsilon \cdot \left({\tan x}^{2} + \varepsilon \cdot \left(\left(\tan x + {\tan x}^{3}\right) + \varepsilon \cdot 0.3333333333333333\right)\right)
\end{array}
Initial program 60.4%
Taylor expanded in eps around 0
Simplified100.0%
Applied egg-rr100.0%
Taylor expanded in x around 0
*-commutativeN/A
*-lowering-*.f6499.9%
Simplified99.9%
Final simplification99.9%
(FPCore (x eps) :precision binary64 (* eps (+ (+ (pow (tan x) 2.0) 1.0) (* eps (+ (tan x) (pow (tan x) 3.0))))))
double code(double x, double eps) {
return eps * ((pow(tan(x), 2.0) + 1.0) + (eps * (tan(x) + pow(tan(x), 3.0))));
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
code = eps * (((tan(x) ** 2.0d0) + 1.0d0) + (eps * (tan(x) + (tan(x) ** 3.0d0))))
end function
public static double code(double x, double eps) {
return eps * ((Math.pow(Math.tan(x), 2.0) + 1.0) + (eps * (Math.tan(x) + Math.pow(Math.tan(x), 3.0))));
}
def code(x, eps): return eps * ((math.pow(math.tan(x), 2.0) + 1.0) + (eps * (math.tan(x) + math.pow(math.tan(x), 3.0))))
function code(x, eps) return Float64(eps * Float64(Float64((tan(x) ^ 2.0) + 1.0) + Float64(eps * Float64(tan(x) + (tan(x) ^ 3.0))))) end
function tmp = code(x, eps) tmp = eps * (((tan(x) ^ 2.0) + 1.0) + (eps * (tan(x) + (tan(x) ^ 3.0)))); end
code[x_, eps_] := N[(eps * N[(N[(N[Power[N[Tan[x], $MachinePrecision], 2.0], $MachinePrecision] + 1.0), $MachinePrecision] + N[(eps * N[(N[Tan[x], $MachinePrecision] + N[Power[N[Tan[x], $MachinePrecision], 3.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\varepsilon \cdot \left(\left({\tan x}^{2} + 1\right) + \varepsilon \cdot \left(\tan x + {\tan x}^{3}\right)\right)
\end{array}
Initial program 60.4%
tan-sumN/A
clear-numN/A
associate-/r/N/A
fmm-defN/A
fma-lowering-fma.f64N/A
/-lowering-/.f64N/A
--lowering--.f64N/A
*-lowering-*.f64N/A
tan-lowering-tan.f64N/A
tan-lowering-tan.f64N/A
+-lowering-+.f64N/A
tan-lowering-tan.f64N/A
tan-lowering-tan.f64N/A
neg-sub0N/A
--lowering--.f64N/A
tan-lowering-tan.f6460.5%
Applied egg-rr60.5%
Taylor expanded in eps around 0
*-lowering-*.f64N/A
cancel-sign-sub-invN/A
+-commutativeN/A
metadata-evalN/A
*-lft-identityN/A
associate-+l+N/A
remove-double-negN/A
Simplified99.8%
Applied egg-rr99.8%
(FPCore (x eps)
:precision binary64
(+
eps
(*
eps
(+
(pow (tan x) 2.0)
(+
(* 0.3333333333333333 (* eps eps))
(* (* eps x) (+ 1.0 (* (* eps eps) 0.6666666666666666))))))))
double code(double x, double eps) {
return eps + (eps * (pow(tan(x), 2.0) + ((0.3333333333333333 * (eps * eps)) + ((eps * x) * (1.0 + ((eps * eps) * 0.6666666666666666))))));
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
code = eps + (eps * ((tan(x) ** 2.0d0) + ((0.3333333333333333d0 * (eps * eps)) + ((eps * x) * (1.0d0 + ((eps * eps) * 0.6666666666666666d0))))))
end function
public static double code(double x, double eps) {
return eps + (eps * (Math.pow(Math.tan(x), 2.0) + ((0.3333333333333333 * (eps * eps)) + ((eps * x) * (1.0 + ((eps * eps) * 0.6666666666666666))))));
}
def code(x, eps): return eps + (eps * (math.pow(math.tan(x), 2.0) + ((0.3333333333333333 * (eps * eps)) + ((eps * x) * (1.0 + ((eps * eps) * 0.6666666666666666))))))
function code(x, eps) return Float64(eps + Float64(eps * Float64((tan(x) ^ 2.0) + Float64(Float64(0.3333333333333333 * Float64(eps * eps)) + Float64(Float64(eps * x) * Float64(1.0 + Float64(Float64(eps * eps) * 0.6666666666666666))))))) end
function tmp = code(x, eps) tmp = eps + (eps * ((tan(x) ^ 2.0) + ((0.3333333333333333 * (eps * eps)) + ((eps * x) * (1.0 + ((eps * eps) * 0.6666666666666666)))))); end
code[x_, eps_] := N[(eps + N[(eps * N[(N[Power[N[Tan[x], $MachinePrecision], 2.0], $MachinePrecision] + N[(N[(0.3333333333333333 * N[(eps * eps), $MachinePrecision]), $MachinePrecision] + N[(N[(eps * x), $MachinePrecision] * N[(1.0 + N[(N[(eps * eps), $MachinePrecision] * 0.6666666666666666), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\varepsilon + \varepsilon \cdot \left({\tan x}^{2} + \left(0.3333333333333333 \cdot \left(\varepsilon \cdot \varepsilon\right) + \left(\varepsilon \cdot x\right) \cdot \left(1 + \left(\varepsilon \cdot \varepsilon\right) \cdot 0.6666666666666666\right)\right)\right)
\end{array}
Initial program 60.4%
Taylor expanded in eps around 0
Simplified100.0%
Applied egg-rr100.0%
Taylor expanded in x around 0
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
associate-*r*N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-commutativeN/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6499.6%
Simplified99.6%
Final simplification99.6%
(FPCore (x eps) :precision binary64 (+ eps (* eps (+ (pow (tan x) 2.0) (* 0.3333333333333333 (* eps eps))))))
double code(double x, double eps) {
return eps + (eps * (pow(tan(x), 2.0) + (0.3333333333333333 * (eps * eps))));
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
code = eps + (eps * ((tan(x) ** 2.0d0) + (0.3333333333333333d0 * (eps * eps))))
end function
public static double code(double x, double eps) {
return eps + (eps * (Math.pow(Math.tan(x), 2.0) + (0.3333333333333333 * (eps * eps))));
}
def code(x, eps): return eps + (eps * (math.pow(math.tan(x), 2.0) + (0.3333333333333333 * (eps * eps))))
function code(x, eps) return Float64(eps + Float64(eps * Float64((tan(x) ^ 2.0) + Float64(0.3333333333333333 * Float64(eps * eps))))) end
function tmp = code(x, eps) tmp = eps + (eps * ((tan(x) ^ 2.0) + (0.3333333333333333 * (eps * eps)))); end
code[x_, eps_] := N[(eps + N[(eps * N[(N[Power[N[Tan[x], $MachinePrecision], 2.0], $MachinePrecision] + N[(0.3333333333333333 * N[(eps * eps), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\varepsilon + \varepsilon \cdot \left({\tan x}^{2} + 0.3333333333333333 \cdot \left(\varepsilon \cdot \varepsilon\right)\right)
\end{array}
Initial program 60.4%
Taylor expanded in eps around 0
Simplified100.0%
Applied egg-rr100.0%
Taylor expanded in x around 0
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6499.4%
Simplified99.4%
Final simplification99.4%
(FPCore (x eps)
:precision binary64
(+
eps
(*
eps
(+
(* 0.3333333333333333 (* eps eps))
(*
(* x x)
(+
1.0
(*
(* x x)
(+
0.6666666666666666
(*
(* x x)
(+ 0.37777777777777777 (* (* x x) 0.19682539682539682)))))))))))
double code(double x, double eps) {
return eps + (eps * ((0.3333333333333333 * (eps * eps)) + ((x * x) * (1.0 + ((x * x) * (0.6666666666666666 + ((x * x) * (0.37777777777777777 + ((x * x) * 0.19682539682539682)))))))));
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
code = eps + (eps * ((0.3333333333333333d0 * (eps * eps)) + ((x * x) * (1.0d0 + ((x * x) * (0.6666666666666666d0 + ((x * x) * (0.37777777777777777d0 + ((x * x) * 0.19682539682539682d0)))))))))
end function
public static double code(double x, double eps) {
return eps + (eps * ((0.3333333333333333 * (eps * eps)) + ((x * x) * (1.0 + ((x * x) * (0.6666666666666666 + ((x * x) * (0.37777777777777777 + ((x * x) * 0.19682539682539682)))))))));
}
def code(x, eps): return eps + (eps * ((0.3333333333333333 * (eps * eps)) + ((x * x) * (1.0 + ((x * x) * (0.6666666666666666 + ((x * x) * (0.37777777777777777 + ((x * x) * 0.19682539682539682)))))))))
function code(x, eps) return Float64(eps + Float64(eps * Float64(Float64(0.3333333333333333 * Float64(eps * eps)) + Float64(Float64(x * x) * Float64(1.0 + Float64(Float64(x * x) * Float64(0.6666666666666666 + Float64(Float64(x * x) * Float64(0.37777777777777777 + Float64(Float64(x * x) * 0.19682539682539682)))))))))) end
function tmp = code(x, eps) tmp = eps + (eps * ((0.3333333333333333 * (eps * eps)) + ((x * x) * (1.0 + ((x * x) * (0.6666666666666666 + ((x * x) * (0.37777777777777777 + ((x * x) * 0.19682539682539682))))))))); end
code[x_, eps_] := N[(eps + N[(eps * N[(N[(0.3333333333333333 * N[(eps * eps), $MachinePrecision]), $MachinePrecision] + N[(N[(x * x), $MachinePrecision] * N[(1.0 + N[(N[(x * x), $MachinePrecision] * N[(0.6666666666666666 + N[(N[(x * x), $MachinePrecision] * N[(0.37777777777777777 + N[(N[(x * x), $MachinePrecision] * 0.19682539682539682), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\varepsilon + \varepsilon \cdot \left(0.3333333333333333 \cdot \left(\varepsilon \cdot \varepsilon\right) + \left(x \cdot x\right) \cdot \left(1 + \left(x \cdot x\right) \cdot \left(0.6666666666666666 + \left(x \cdot x\right) \cdot \left(0.37777777777777777 + \left(x \cdot x\right) \cdot 0.19682539682539682\right)\right)\right)\right)
\end{array}
Initial program 60.4%
Taylor expanded in eps around 0
Simplified100.0%
Applied egg-rr100.0%
Taylor expanded in x around 0
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6499.4%
Simplified99.4%
Taylor expanded in x around 0
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-commutativeN/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6498.9%
Simplified98.9%
Final simplification98.9%
(FPCore (x eps)
:precision binary64
(+
(+ eps (* 0.3333333333333333 (* eps (* eps eps))))
(*
(* x x)
(+
eps
(*
(* x x)
(+
(* 0.37777777777777777 (* eps (* x x)))
(* eps 0.6666666666666666)))))))
double code(double x, double eps) {
return (eps + (0.3333333333333333 * (eps * (eps * eps)))) + ((x * x) * (eps + ((x * x) * ((0.37777777777777777 * (eps * (x * x))) + (eps * 0.6666666666666666)))));
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
code = (eps + (0.3333333333333333d0 * (eps * (eps * eps)))) + ((x * x) * (eps + ((x * x) * ((0.37777777777777777d0 * (eps * (x * x))) + (eps * 0.6666666666666666d0)))))
end function
public static double code(double x, double eps) {
return (eps + (0.3333333333333333 * (eps * (eps * eps)))) + ((x * x) * (eps + ((x * x) * ((0.37777777777777777 * (eps * (x * x))) + (eps * 0.6666666666666666)))));
}
def code(x, eps): return (eps + (0.3333333333333333 * (eps * (eps * eps)))) + ((x * x) * (eps + ((x * x) * ((0.37777777777777777 * (eps * (x * x))) + (eps * 0.6666666666666666)))))
function code(x, eps) return Float64(Float64(eps + Float64(0.3333333333333333 * Float64(eps * Float64(eps * eps)))) + Float64(Float64(x * x) * Float64(eps + Float64(Float64(x * x) * Float64(Float64(0.37777777777777777 * Float64(eps * Float64(x * x))) + Float64(eps * 0.6666666666666666)))))) end
function tmp = code(x, eps) tmp = (eps + (0.3333333333333333 * (eps * (eps * eps)))) + ((x * x) * (eps + ((x * x) * ((0.37777777777777777 * (eps * (x * x))) + (eps * 0.6666666666666666))))); end
code[x_, eps_] := N[(N[(eps + N[(0.3333333333333333 * N[(eps * N[(eps * eps), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(N[(x * x), $MachinePrecision] * N[(eps + N[(N[(x * x), $MachinePrecision] * N[(N[(0.37777777777777777 * N[(eps * N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(eps * 0.6666666666666666), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(\varepsilon + 0.3333333333333333 \cdot \left(\varepsilon \cdot \left(\varepsilon \cdot \varepsilon\right)\right)\right) + \left(x \cdot x\right) \cdot \left(\varepsilon + \left(x \cdot x\right) \cdot \left(0.37777777777777777 \cdot \left(\varepsilon \cdot \left(x \cdot x\right)\right) + \varepsilon \cdot 0.6666666666666666\right)\right)
\end{array}
Initial program 60.4%
Taylor expanded in eps around 0
Simplified100.0%
Applied egg-rr100.0%
Taylor expanded in x around 0
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6499.4%
Simplified99.4%
Taylor expanded in x around 0
associate-+r+N/A
+-lowering-+.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
cube-multN/A
unpow2N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
Simplified98.8%
Final simplification98.8%
(FPCore (x eps)
:precision binary64
(+
eps
(*
eps
(+
(* 0.3333333333333333 (* eps eps))
(*
(* x x)
(+
1.0
(* (* x x) (+ 0.6666666666666666 (* (* x x) 0.37777777777777777)))))))))
double code(double x, double eps) {
return eps + (eps * ((0.3333333333333333 * (eps * eps)) + ((x * x) * (1.0 + ((x * x) * (0.6666666666666666 + ((x * x) * 0.37777777777777777)))))));
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
code = eps + (eps * ((0.3333333333333333d0 * (eps * eps)) + ((x * x) * (1.0d0 + ((x * x) * (0.6666666666666666d0 + ((x * x) * 0.37777777777777777d0)))))))
end function
public static double code(double x, double eps) {
return eps + (eps * ((0.3333333333333333 * (eps * eps)) + ((x * x) * (1.0 + ((x * x) * (0.6666666666666666 + ((x * x) * 0.37777777777777777)))))));
}
def code(x, eps): return eps + (eps * ((0.3333333333333333 * (eps * eps)) + ((x * x) * (1.0 + ((x * x) * (0.6666666666666666 + ((x * x) * 0.37777777777777777)))))))
function code(x, eps) return Float64(eps + Float64(eps * Float64(Float64(0.3333333333333333 * Float64(eps * eps)) + Float64(Float64(x * x) * Float64(1.0 + Float64(Float64(x * x) * Float64(0.6666666666666666 + Float64(Float64(x * x) * 0.37777777777777777)))))))) end
function tmp = code(x, eps) tmp = eps + (eps * ((0.3333333333333333 * (eps * eps)) + ((x * x) * (1.0 + ((x * x) * (0.6666666666666666 + ((x * x) * 0.37777777777777777))))))); end
code[x_, eps_] := N[(eps + N[(eps * N[(N[(0.3333333333333333 * N[(eps * eps), $MachinePrecision]), $MachinePrecision] + N[(N[(x * x), $MachinePrecision] * N[(1.0 + N[(N[(x * x), $MachinePrecision] * N[(0.6666666666666666 + N[(N[(x * x), $MachinePrecision] * 0.37777777777777777), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\varepsilon + \varepsilon \cdot \left(0.3333333333333333 \cdot \left(\varepsilon \cdot \varepsilon\right) + \left(x \cdot x\right) \cdot \left(1 + \left(x \cdot x\right) \cdot \left(0.6666666666666666 + \left(x \cdot x\right) \cdot 0.37777777777777777\right)\right)\right)
\end{array}
Initial program 60.4%
Taylor expanded in eps around 0
Simplified100.0%
Applied egg-rr100.0%
Taylor expanded in x around 0
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6499.4%
Simplified99.4%
Taylor expanded in x around 0
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-commutativeN/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6498.8%
Simplified98.8%
Final simplification98.8%
(FPCore (x eps) :precision binary64 (* eps (+ 1.0 (+ (* 0.3333333333333333 (* eps eps)) (* x (+ eps x))))))
double code(double x, double eps) {
return eps * (1.0 + ((0.3333333333333333 * (eps * eps)) + (x * (eps + x))));
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
code = eps * (1.0d0 + ((0.3333333333333333d0 * (eps * eps)) + (x * (eps + x))))
end function
public static double code(double x, double eps) {
return eps * (1.0 + ((0.3333333333333333 * (eps * eps)) + (x * (eps + x))));
}
def code(x, eps): return eps * (1.0 + ((0.3333333333333333 * (eps * eps)) + (x * (eps + x))))
function code(x, eps) return Float64(eps * Float64(1.0 + Float64(Float64(0.3333333333333333 * Float64(eps * eps)) + Float64(x * Float64(eps + x))))) end
function tmp = code(x, eps) tmp = eps * (1.0 + ((0.3333333333333333 * (eps * eps)) + (x * (eps + x)))); end
code[x_, eps_] := N[(eps * N[(1.0 + N[(N[(0.3333333333333333 * N[(eps * eps), $MachinePrecision]), $MachinePrecision] + N[(x * N[(eps + x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\varepsilon \cdot \left(1 + \left(0.3333333333333333 \cdot \left(\varepsilon \cdot \varepsilon\right) + x \cdot \left(\varepsilon + x\right)\right)\right)
\end{array}
Initial program 60.4%
Taylor expanded in eps around 0
Simplified100.0%
Taylor expanded in x around 0
+-lowering-+.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-commutativeN/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-commutativeN/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
Simplified98.8%
Taylor expanded in eps around 0
unpow2N/A
distribute-rgt-inN/A
*-lowering-*.f64N/A
+-lowering-+.f6498.8%
Simplified98.8%
(FPCore (x eps) :precision binary64 (+ eps (* x (* eps (+ eps x)))))
double code(double x, double eps) {
return eps + (x * (eps * (eps + x)));
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
code = eps + (x * (eps * (eps + x)))
end function
public static double code(double x, double eps) {
return eps + (x * (eps * (eps + x)));
}
def code(x, eps): return eps + (x * (eps * (eps + x)))
function code(x, eps) return Float64(eps + Float64(x * Float64(eps * Float64(eps + x)))) end
function tmp = code(x, eps) tmp = eps + (x * (eps * (eps + x))); end
code[x_, eps_] := N[(eps + N[(x * N[(eps * N[(eps + x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\varepsilon + x \cdot \left(\varepsilon \cdot \left(\varepsilon + x\right)\right)
\end{array}
Initial program 60.4%
tan-sumN/A
clear-numN/A
associate-/r/N/A
fmm-defN/A
fma-lowering-fma.f64N/A
/-lowering-/.f64N/A
--lowering--.f64N/A
*-lowering-*.f64N/A
tan-lowering-tan.f64N/A
tan-lowering-tan.f64N/A
+-lowering-+.f64N/A
tan-lowering-tan.f64N/A
tan-lowering-tan.f64N/A
neg-sub0N/A
--lowering--.f64N/A
tan-lowering-tan.f6460.5%
Applied egg-rr60.5%
Taylor expanded in eps around 0
*-lowering-*.f64N/A
cancel-sign-sub-invN/A
+-commutativeN/A
metadata-evalN/A
*-lft-identityN/A
associate-+l+N/A
remove-double-negN/A
Simplified99.8%
Taylor expanded in x around 0
+-lowering-+.f64N/A
*-lowering-*.f64N/A
+-commutativeN/A
unpow2N/A
distribute-lft-outN/A
*-lowering-*.f64N/A
+-lowering-+.f6498.8%
Simplified98.8%
(FPCore (x eps) :precision binary64 (* eps (+ 1.0 (* x x))))
double code(double x, double eps) {
return eps * (1.0 + (x * x));
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
code = eps * (1.0d0 + (x * x))
end function
public static double code(double x, double eps) {
return eps * (1.0 + (x * x));
}
def code(x, eps): return eps * (1.0 + (x * x))
function code(x, eps) return Float64(eps * Float64(1.0 + Float64(x * x))) end
function tmp = code(x, eps) tmp = eps * (1.0 + (x * x)); end
code[x_, eps_] := N[(eps * N[(1.0 + N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\varepsilon \cdot \left(1 + x \cdot x\right)
\end{array}
Initial program 60.4%
Taylor expanded in eps around 0
Simplified100.0%
Taylor expanded in x around 0
+-lowering-+.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-commutativeN/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-commutativeN/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
Simplified98.8%
Taylor expanded in eps around 0
*-lowering-*.f64N/A
+-lowering-+.f64N/A
unpow2N/A
*-lowering-*.f6498.7%
Simplified98.7%
(FPCore (x eps) :precision binary64 eps)
double code(double x, double eps) {
return eps;
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
code = eps
end function
public static double code(double x, double eps) {
return eps;
}
def code(x, eps): return eps
function code(x, eps) return eps end
function tmp = code(x, eps) tmp = eps; end
code[x_, eps_] := eps
\begin{array}{l}
\\
\varepsilon
\end{array}
Initial program 60.4%
Taylor expanded in x around 0
/-lowering-/.f64N/A
sin-lowering-sin.f64N/A
cos-lowering-cos.f6498.2%
Simplified98.2%
Taylor expanded in eps around 0
Simplified98.2%
(FPCore (x eps) :precision binary64 (/ (sin eps) (* (cos x) (cos (+ x eps)))))
double code(double x, double eps) {
return sin(eps) / (cos(x) * cos((x + eps)));
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
code = sin(eps) / (cos(x) * cos((x + eps)))
end function
public static double code(double x, double eps) {
return Math.sin(eps) / (Math.cos(x) * Math.cos((x + eps)));
}
def code(x, eps): return math.sin(eps) / (math.cos(x) * math.cos((x + eps)))
function code(x, eps) return Float64(sin(eps) / Float64(cos(x) * cos(Float64(x + eps)))) end
function tmp = code(x, eps) tmp = sin(eps) / (cos(x) * cos((x + eps))); end
code[x_, eps_] := N[(N[Sin[eps], $MachinePrecision] / N[(N[Cos[x], $MachinePrecision] * N[Cos[N[(x + eps), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{\sin \varepsilon}{\cos x \cdot \cos \left(x + \varepsilon\right)}
\end{array}
herbie shell --seed 2024141
(FPCore (x eps)
:name "2tan (problem 3.3.2)"
:precision binary64
:pre (and (and (and (<= -10000.0 x) (<= x 10000.0)) (< (* 1e-16 (fabs x)) eps)) (< eps (fabs x)))
:alt
(! :herbie-platform default (/ (sin eps) (* (cos x) (cos (+ x eps)))))
(- (tan (+ x eps)) (tan x)))