
(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 11 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))
(t_1 (+ t_0 (pow (tan x) 4.0)))
(t_2 (* t_0 -0.3333333333333333))
(t_3 (+ (tan x) (pow (tan x) 3.0))))
(*
eps
(+
(+
t_0
(*
eps
(+
t_3
(*
eps
(+
t_1
(-
(- 0.3333333333333333 t_2)
(*
eps
(+
(* t_3 -0.3333333333333333)
(* (tan x) (+ (+ t_2 -0.5) (- 0.16666666666666666 t_1)))))))))))
1.0))))
double code(double x, double eps) {
double t_0 = pow(tan(x), 2.0);
double t_1 = t_0 + pow(tan(x), 4.0);
double t_2 = t_0 * -0.3333333333333333;
double t_3 = tan(x) + pow(tan(x), 3.0);
return eps * ((t_0 + (eps * (t_3 + (eps * (t_1 + ((0.3333333333333333 - t_2) - (eps * ((t_3 * -0.3333333333333333) + (tan(x) * ((t_2 + -0.5) + (0.16666666666666666 - t_1))))))))))) + 1.0);
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
real(8) :: t_0
real(8) :: t_1
real(8) :: t_2
real(8) :: t_3
t_0 = tan(x) ** 2.0d0
t_1 = t_0 + (tan(x) ** 4.0d0)
t_2 = t_0 * (-0.3333333333333333d0)
t_3 = tan(x) + (tan(x) ** 3.0d0)
code = eps * ((t_0 + (eps * (t_3 + (eps * (t_1 + ((0.3333333333333333d0 - t_2) - (eps * ((t_3 * (-0.3333333333333333d0)) + (tan(x) * ((t_2 + (-0.5d0)) + (0.16666666666666666d0 - t_1))))))))))) + 1.0d0)
end function
public static double code(double x, double eps) {
double t_0 = Math.pow(Math.tan(x), 2.0);
double t_1 = t_0 + Math.pow(Math.tan(x), 4.0);
double t_2 = t_0 * -0.3333333333333333;
double t_3 = Math.tan(x) + Math.pow(Math.tan(x), 3.0);
return eps * ((t_0 + (eps * (t_3 + (eps * (t_1 + ((0.3333333333333333 - t_2) - (eps * ((t_3 * -0.3333333333333333) + (Math.tan(x) * ((t_2 + -0.5) + (0.16666666666666666 - t_1))))))))))) + 1.0);
}
def code(x, eps): t_0 = math.pow(math.tan(x), 2.0) t_1 = t_0 + math.pow(math.tan(x), 4.0) t_2 = t_0 * -0.3333333333333333 t_3 = math.tan(x) + math.pow(math.tan(x), 3.0) return eps * ((t_0 + (eps * (t_3 + (eps * (t_1 + ((0.3333333333333333 - t_2) - (eps * ((t_3 * -0.3333333333333333) + (math.tan(x) * ((t_2 + -0.5) + (0.16666666666666666 - t_1))))))))))) + 1.0)
function code(x, eps) t_0 = tan(x) ^ 2.0 t_1 = Float64(t_0 + (tan(x) ^ 4.0)) t_2 = Float64(t_0 * -0.3333333333333333) t_3 = Float64(tan(x) + (tan(x) ^ 3.0)) return Float64(eps * Float64(Float64(t_0 + Float64(eps * Float64(t_3 + Float64(eps * Float64(t_1 + Float64(Float64(0.3333333333333333 - t_2) - Float64(eps * Float64(Float64(t_3 * -0.3333333333333333) + Float64(tan(x) * Float64(Float64(t_2 + -0.5) + Float64(0.16666666666666666 - t_1))))))))))) + 1.0)) end
function tmp = code(x, eps) t_0 = tan(x) ^ 2.0; t_1 = t_0 + (tan(x) ^ 4.0); t_2 = t_0 * -0.3333333333333333; t_3 = tan(x) + (tan(x) ^ 3.0); tmp = eps * ((t_0 + (eps * (t_3 + (eps * (t_1 + ((0.3333333333333333 - t_2) - (eps * ((t_3 * -0.3333333333333333) + (tan(x) * ((t_2 + -0.5) + (0.16666666666666666 - t_1))))))))))) + 1.0); end
code[x_, eps_] := Block[{t$95$0 = N[Power[N[Tan[x], $MachinePrecision], 2.0], $MachinePrecision]}, Block[{t$95$1 = N[(t$95$0 + N[Power[N[Tan[x], $MachinePrecision], 4.0], $MachinePrecision]), $MachinePrecision]}, Block[{t$95$2 = N[(t$95$0 * -0.3333333333333333), $MachinePrecision]}, Block[{t$95$3 = N[(N[Tan[x], $MachinePrecision] + N[Power[N[Tan[x], $MachinePrecision], 3.0], $MachinePrecision]), $MachinePrecision]}, N[(eps * N[(N[(t$95$0 + N[(eps * N[(t$95$3 + N[(eps * N[(t$95$1 + N[(N[(0.3333333333333333 - t$95$2), $MachinePrecision] - N[(eps * N[(N[(t$95$3 * -0.3333333333333333), $MachinePrecision] + N[(N[Tan[x], $MachinePrecision] * N[(N[(t$95$2 + -0.5), $MachinePrecision] + N[(0.16666666666666666 - t$95$1), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]]]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := {\tan x}^{2}\\
t_1 := t\_0 + {\tan x}^{4}\\
t_2 := t\_0 \cdot -0.3333333333333333\\
t_3 := \tan x + {\tan x}^{3}\\
\varepsilon \cdot \left(\left(t\_0 + \varepsilon \cdot \left(t\_3 + \varepsilon \cdot \left(t\_1 + \left(\left(0.3333333333333333 - t\_2\right) - \varepsilon \cdot \left(t\_3 \cdot -0.3333333333333333 + \tan x \cdot \left(\left(t\_2 + -0.5\right) + \left(0.16666666666666666 - t\_1\right)\right)\right)\right)\right)\right)\right) + 1\right)
\end{array}
\end{array}
Initial program 61.7%
Taylor expanded in eps around 0
Simplified100.0%
Applied egg-rr100.0%
Applied egg-rr100.0%
Final simplification100.0%
(FPCore (x eps)
:precision binary64
(let* ((t_0 (pow (tan x) 2.0)) (t_1 (+ (tan x) (pow (tan x) 3.0))))
(*
eps
(+
(+
t_0
(*
eps
(+
t_1
(*
eps
(+
(+ t_0 (pow (tan x) 4.0))
(-
(- 0.3333333333333333 (* t_0 -0.3333333333333333))
(*
eps
(+
(* t_1 -0.3333333333333333)
(* (tan x) -0.3333333333333333)))))))))
1.0))))
double code(double x, double eps) {
double t_0 = pow(tan(x), 2.0);
double t_1 = tan(x) + pow(tan(x), 3.0);
return eps * ((t_0 + (eps * (t_1 + (eps * ((t_0 + pow(tan(x), 4.0)) + ((0.3333333333333333 - (t_0 * -0.3333333333333333)) - (eps * ((t_1 * -0.3333333333333333) + (tan(x) * -0.3333333333333333))))))))) + 1.0);
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
real(8) :: t_0
real(8) :: t_1
t_0 = tan(x) ** 2.0d0
t_1 = tan(x) + (tan(x) ** 3.0d0)
code = eps * ((t_0 + (eps * (t_1 + (eps * ((t_0 + (tan(x) ** 4.0d0)) + ((0.3333333333333333d0 - (t_0 * (-0.3333333333333333d0))) - (eps * ((t_1 * (-0.3333333333333333d0)) + (tan(x) * (-0.3333333333333333d0)))))))))) + 1.0d0)
end function
public static double code(double x, double eps) {
double t_0 = Math.pow(Math.tan(x), 2.0);
double t_1 = Math.tan(x) + Math.pow(Math.tan(x), 3.0);
return eps * ((t_0 + (eps * (t_1 + (eps * ((t_0 + Math.pow(Math.tan(x), 4.0)) + ((0.3333333333333333 - (t_0 * -0.3333333333333333)) - (eps * ((t_1 * -0.3333333333333333) + (Math.tan(x) * -0.3333333333333333))))))))) + 1.0);
}
def code(x, eps): t_0 = math.pow(math.tan(x), 2.0) t_1 = math.tan(x) + math.pow(math.tan(x), 3.0) return eps * ((t_0 + (eps * (t_1 + (eps * ((t_0 + math.pow(math.tan(x), 4.0)) + ((0.3333333333333333 - (t_0 * -0.3333333333333333)) - (eps * ((t_1 * -0.3333333333333333) + (math.tan(x) * -0.3333333333333333))))))))) + 1.0)
function code(x, eps) t_0 = tan(x) ^ 2.0 t_1 = Float64(tan(x) + (tan(x) ^ 3.0)) return Float64(eps * Float64(Float64(t_0 + Float64(eps * Float64(t_1 + Float64(eps * Float64(Float64(t_0 + (tan(x) ^ 4.0)) + Float64(Float64(0.3333333333333333 - Float64(t_0 * -0.3333333333333333)) - Float64(eps * Float64(Float64(t_1 * -0.3333333333333333) + Float64(tan(x) * -0.3333333333333333))))))))) + 1.0)) end
function tmp = code(x, eps) t_0 = tan(x) ^ 2.0; t_1 = tan(x) + (tan(x) ^ 3.0); tmp = eps * ((t_0 + (eps * (t_1 + (eps * ((t_0 + (tan(x) ^ 4.0)) + ((0.3333333333333333 - (t_0 * -0.3333333333333333)) - (eps * ((t_1 * -0.3333333333333333) + (tan(x) * -0.3333333333333333))))))))) + 1.0); end
code[x_, eps_] := Block[{t$95$0 = N[Power[N[Tan[x], $MachinePrecision], 2.0], $MachinePrecision]}, Block[{t$95$1 = N[(N[Tan[x], $MachinePrecision] + N[Power[N[Tan[x], $MachinePrecision], 3.0], $MachinePrecision]), $MachinePrecision]}, N[(eps * N[(N[(t$95$0 + N[(eps * N[(t$95$1 + N[(eps * N[(N[(t$95$0 + N[Power[N[Tan[x], $MachinePrecision], 4.0], $MachinePrecision]), $MachinePrecision] + N[(N[(0.3333333333333333 - N[(t$95$0 * -0.3333333333333333), $MachinePrecision]), $MachinePrecision] - N[(eps * N[(N[(t$95$1 * -0.3333333333333333), $MachinePrecision] + N[(N[Tan[x], $MachinePrecision] * -0.3333333333333333), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := {\tan x}^{2}\\
t_1 := \tan x + {\tan x}^{3}\\
\varepsilon \cdot \left(\left(t\_0 + \varepsilon \cdot \left(t\_1 + \varepsilon \cdot \left(\left(t\_0 + {\tan x}^{4}\right) + \left(\left(0.3333333333333333 - t\_0 \cdot -0.3333333333333333\right) - \varepsilon \cdot \left(t\_1 \cdot -0.3333333333333333 + \tan x \cdot -0.3333333333333333\right)\right)\right)\right)\right) + 1\right)
\end{array}
\end{array}
Initial program 61.7%
Taylor expanded in eps around 0
Simplified100.0%
Applied egg-rr100.0%
Applied egg-rr100.0%
Taylor expanded in x around 0
Simplified100.0%
Final simplification100.0%
(FPCore (x eps)
:precision binary64
(let* ((t_0 (pow (tan x) 2.0)))
(*
eps
(+
(+
t_0
(*
eps
(+
(+ (tan x) (pow (tan x) 3.0))
(*
eps
(+
(+ t_0 (pow (tan x) 4.0))
(-
0.3333333333333333
(/
(* -0.3333333333333333 (pow (sin x) 2.0))
(pow (cos x) 2.0))))))))
1.0))))
double code(double x, double eps) {
double t_0 = pow(tan(x), 2.0);
return eps * ((t_0 + (eps * ((tan(x) + pow(tan(x), 3.0)) + (eps * ((t_0 + pow(tan(x), 4.0)) + (0.3333333333333333 - ((-0.3333333333333333 * pow(sin(x), 2.0)) / pow(cos(x), 2.0)))))))) + 1.0);
}
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 * ((t_0 + (eps * ((tan(x) + (tan(x) ** 3.0d0)) + (eps * ((t_0 + (tan(x) ** 4.0d0)) + (0.3333333333333333d0 - (((-0.3333333333333333d0) * (sin(x) ** 2.0d0)) / (cos(x) ** 2.0d0)))))))) + 1.0d0)
end function
public static double code(double x, double eps) {
double t_0 = Math.pow(Math.tan(x), 2.0);
return eps * ((t_0 + (eps * ((Math.tan(x) + Math.pow(Math.tan(x), 3.0)) + (eps * ((t_0 + Math.pow(Math.tan(x), 4.0)) + (0.3333333333333333 - ((-0.3333333333333333 * Math.pow(Math.sin(x), 2.0)) / Math.pow(Math.cos(x), 2.0)))))))) + 1.0);
}
def code(x, eps): t_0 = math.pow(math.tan(x), 2.0) return eps * ((t_0 + (eps * ((math.tan(x) + math.pow(math.tan(x), 3.0)) + (eps * ((t_0 + math.pow(math.tan(x), 4.0)) + (0.3333333333333333 - ((-0.3333333333333333 * math.pow(math.sin(x), 2.0)) / math.pow(math.cos(x), 2.0)))))))) + 1.0)
function code(x, eps) t_0 = tan(x) ^ 2.0 return Float64(eps * Float64(Float64(t_0 + Float64(eps * Float64(Float64(tan(x) + (tan(x) ^ 3.0)) + Float64(eps * Float64(Float64(t_0 + (tan(x) ^ 4.0)) + Float64(0.3333333333333333 - Float64(Float64(-0.3333333333333333 * (sin(x) ^ 2.0)) / (cos(x) ^ 2.0)))))))) + 1.0)) end
function tmp = code(x, eps) t_0 = tan(x) ^ 2.0; tmp = eps * ((t_0 + (eps * ((tan(x) + (tan(x) ^ 3.0)) + (eps * ((t_0 + (tan(x) ^ 4.0)) + (0.3333333333333333 - ((-0.3333333333333333 * (sin(x) ^ 2.0)) / (cos(x) ^ 2.0)))))))) + 1.0); end
code[x_, eps_] := Block[{t$95$0 = N[Power[N[Tan[x], $MachinePrecision], 2.0], $MachinePrecision]}, N[(eps * N[(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[(t$95$0 + N[Power[N[Tan[x], $MachinePrecision], 4.0], $MachinePrecision]), $MachinePrecision] + N[(0.3333333333333333 - N[(N[(-0.3333333333333333 * N[Power[N[Sin[x], $MachinePrecision], 2.0], $MachinePrecision]), $MachinePrecision] / N[Power[N[Cos[x], $MachinePrecision], 2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := {\tan x}^{2}\\
\varepsilon \cdot \left(\left(t\_0 + \varepsilon \cdot \left(\left(\tan x + {\tan x}^{3}\right) + \varepsilon \cdot \left(\left(t\_0 + {\tan x}^{4}\right) + \left(0.3333333333333333 - \frac{-0.3333333333333333 \cdot {\sin x}^{2}}{{\cos x}^{2}}\right)\right)\right)\right) + 1\right)
\end{array}
\end{array}
Initial program 61.7%
Taylor expanded in eps around 0
Simplified100.0%
Applied egg-rr100.0%
Applied egg-rr100.0%
Taylor expanded in eps around 0
--lowering--.f64N/A
associate-*r/N/A
/-lowering-/.f64N/A
*-lowering-*.f64N/A
pow-lowering-pow.f64N/A
sin-lowering-sin.f64N/A
pow-lowering-pow.f64N/A
cos-lowering-cos.f64100.0%
Simplified100.0%
Final simplification100.0%
(FPCore (x eps)
:precision binary64
(*
eps
(+
(+
(pow (tan x) 2.0)
(* eps (+ (+ (tan x) (pow (tan x) 3.0)) (* eps 0.3333333333333333))))
1.0)))
double code(double x, double eps) {
return eps * ((pow(tan(x), 2.0) + (eps * ((tan(x) + pow(tan(x), 3.0)) + (eps * 0.3333333333333333)))) + 1.0);
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
code = eps * (((tan(x) ** 2.0d0) + (eps * ((tan(x) + (tan(x) ** 3.0d0)) + (eps * 0.3333333333333333d0)))) + 1.0d0)
end function
public static double code(double x, double eps) {
return eps * ((Math.pow(Math.tan(x), 2.0) + (eps * ((Math.tan(x) + Math.pow(Math.tan(x), 3.0)) + (eps * 0.3333333333333333)))) + 1.0);
}
def code(x, eps): return eps * ((math.pow(math.tan(x), 2.0) + (eps * ((math.tan(x) + math.pow(math.tan(x), 3.0)) + (eps * 0.3333333333333333)))) + 1.0)
function code(x, eps) return Float64(eps * Float64(Float64((tan(x) ^ 2.0) + Float64(eps * Float64(Float64(tan(x) + (tan(x) ^ 3.0)) + Float64(eps * 0.3333333333333333)))) + 1.0)) end
function tmp = code(x, eps) tmp = eps * (((tan(x) ^ 2.0) + (eps * ((tan(x) + (tan(x) ^ 3.0)) + (eps * 0.3333333333333333)))) + 1.0); end
code[x_, eps_] := N[(eps * N[(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] + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\varepsilon \cdot \left(\left({\tan x}^{2} + \varepsilon \cdot \left(\left(\tan x + {\tan x}^{3}\right) + \varepsilon \cdot 0.3333333333333333\right)\right) + 1\right)
\end{array}
Initial program 61.7%
Taylor expanded in eps around 0
Simplified100.0%
Applied egg-rr100.0%
Applied egg-rr100.0%
Taylor expanded in x around 0
Simplified99.9%
Final simplification99.9%
(FPCore (x eps) :precision binary64 (let* ((t_0 (* 0.5 (cos (* x 2.0))))) (* eps (+ (/ (- 0.5 t_0) (+ 0.5 t_0)) 1.0))))
double code(double x, double eps) {
double t_0 = 0.5 * cos((x * 2.0));
return eps * (((0.5 - t_0) / (0.5 + t_0)) + 1.0);
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
real(8) :: t_0
t_0 = 0.5d0 * cos((x * 2.0d0))
code = eps * (((0.5d0 - t_0) / (0.5d0 + t_0)) + 1.0d0)
end function
public static double code(double x, double eps) {
double t_0 = 0.5 * Math.cos((x * 2.0));
return eps * (((0.5 - t_0) / (0.5 + t_0)) + 1.0);
}
def code(x, eps): t_0 = 0.5 * math.cos((x * 2.0)) return eps * (((0.5 - t_0) / (0.5 + t_0)) + 1.0)
function code(x, eps) t_0 = Float64(0.5 * cos(Float64(x * 2.0))) return Float64(eps * Float64(Float64(Float64(0.5 - t_0) / Float64(0.5 + t_0)) + 1.0)) end
function tmp = code(x, eps) t_0 = 0.5 * cos((x * 2.0)); tmp = eps * (((0.5 - t_0) / (0.5 + t_0)) + 1.0); end
code[x_, eps_] := Block[{t$95$0 = N[(0.5 * N[Cos[N[(x * 2.0), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]}, N[(eps * N[(N[(N[(0.5 - t$95$0), $MachinePrecision] / N[(0.5 + t$95$0), $MachinePrecision]), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := 0.5 \cdot \cos \left(x \cdot 2\right)\\
\varepsilon \cdot \left(\frac{0.5 - t\_0}{0.5 + t\_0} + 1\right)
\end{array}
\end{array}
Initial program 61.7%
tan-sumN/A
/-lowering-/.f64N/A
+-lowering-+.f64N/A
tan-lowering-tan.f64N/A
tan-lowering-tan.f64N/A
--lowering--.f64N/A
*-lowering-*.f64N/A
tan-lowering-tan.f64N/A
tan-lowering-tan.f6461.9%
Applied egg-rr61.9%
Taylor expanded in eps around 0
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6461.9%
Simplified61.9%
Taylor expanded in eps around 0
*-commutativeN/A
sub-negN/A
mul-1-negN/A
remove-double-negN/A
*-lowering-*.f64N/A
+-commutativeN/A
+-lowering-+.f64N/A
/-lowering-/.f64N/A
pow-lowering-pow.f64N/A
sin-lowering-sin.f64N/A
pow-lowering-pow.f64N/A
cos-lowering-cos.f6499.5%
Simplified99.5%
/-lowering-/.f64N/A
unpow2N/A
sqr-sin-aN/A
--lowering--.f64N/A
*-lowering-*.f64N/A
cos-lowering-cos.f64N/A
*-lowering-*.f64N/A
unpow2N/A
sqr-cos-aN/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
cos-lowering-cos.f64N/A
*-lowering-*.f6499.5%
Applied egg-rr99.5%
Final simplification99.5%
(FPCore (x eps) :precision binary64 (+ eps (* eps (pow (tan x) 2.0))))
double code(double x, double eps) {
return eps + (eps * pow(tan(x), 2.0));
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
code = eps + (eps * (tan(x) ** 2.0d0))
end function
public static double code(double x, double eps) {
return eps + (eps * Math.pow(Math.tan(x), 2.0));
}
def code(x, eps): return eps + (eps * math.pow(math.tan(x), 2.0))
function code(x, eps) return Float64(eps + Float64(eps * (tan(x) ^ 2.0))) end
function tmp = code(x, eps) tmp = eps + (eps * (tan(x) ^ 2.0)); end
code[x_, eps_] := N[(eps + N[(eps * N[Power[N[Tan[x], $MachinePrecision], 2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\varepsilon + \varepsilon \cdot {\tan x}^{2}
\end{array}
Initial program 61.7%
tan-sumN/A
/-lowering-/.f64N/A
+-lowering-+.f64N/A
tan-lowering-tan.f64N/A
tan-lowering-tan.f64N/A
--lowering--.f64N/A
*-lowering-*.f64N/A
tan-lowering-tan.f64N/A
tan-lowering-tan.f6461.9%
Applied egg-rr61.9%
Taylor expanded in eps around 0
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6461.9%
Simplified61.9%
Taylor expanded in eps around 0
*-commutativeN/A
sub-negN/A
mul-1-negN/A
remove-double-negN/A
*-lowering-*.f64N/A
+-commutativeN/A
+-lowering-+.f64N/A
/-lowering-/.f64N/A
pow-lowering-pow.f64N/A
sin-lowering-sin.f64N/A
pow-lowering-pow.f64N/A
cos-lowering-cos.f6499.5%
Simplified99.5%
*-commutativeN/A
flip3-+N/A
flip3-+N/A
unpow2N/A
unpow2N/A
frac-timesN/A
tan-quotN/A
tan-quotN/A
unpow2N/A
distribute-rgt-inN/A
*-lft-identityN/A
+-lowering-+.f64N/A
Applied egg-rr99.5%
Final simplification99.5%
(FPCore (x eps)
:precision binary64
(*
eps
(+
(*
(* x x)
(+
(*
(* x x)
(+
0.6666666666666666
(* x (* x (+ 0.37777777777777777 (* (* x x) 0.19682539682539682))))))
1.0))
1.0)))
double code(double x, double eps) {
return eps * (((x * x) * (((x * x) * (0.6666666666666666 + (x * (x * (0.37777777777777777 + ((x * x) * 0.19682539682539682)))))) + 1.0)) + 1.0);
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
code = eps * (((x * x) * (((x * x) * (0.6666666666666666d0 + (x * (x * (0.37777777777777777d0 + ((x * x) * 0.19682539682539682d0)))))) + 1.0d0)) + 1.0d0)
end function
public static double code(double x, double eps) {
return eps * (((x * x) * (((x * x) * (0.6666666666666666 + (x * (x * (0.37777777777777777 + ((x * x) * 0.19682539682539682)))))) + 1.0)) + 1.0);
}
def code(x, eps): return eps * (((x * x) * (((x * x) * (0.6666666666666666 + (x * (x * (0.37777777777777777 + ((x * x) * 0.19682539682539682)))))) + 1.0)) + 1.0)
function code(x, eps) return Float64(eps * Float64(Float64(Float64(x * x) * Float64(Float64(Float64(x * x) * Float64(0.6666666666666666 + Float64(x * Float64(x * Float64(0.37777777777777777 + Float64(Float64(x * x) * 0.19682539682539682)))))) + 1.0)) + 1.0)) end
function tmp = code(x, eps) tmp = eps * (((x * x) * (((x * x) * (0.6666666666666666 + (x * (x * (0.37777777777777777 + ((x * x) * 0.19682539682539682)))))) + 1.0)) + 1.0); end
code[x_, eps_] := N[(eps * N[(N[(N[(x * x), $MachinePrecision] * N[(N[(N[(x * x), $MachinePrecision] * N[(0.6666666666666666 + N[(x * N[(x * N[(0.37777777777777777 + N[(N[(x * x), $MachinePrecision] * 0.19682539682539682), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\varepsilon \cdot \left(\left(x \cdot x\right) \cdot \left(\left(x \cdot x\right) \cdot \left(0.6666666666666666 + x \cdot \left(x \cdot \left(0.37777777777777777 + \left(x \cdot x\right) \cdot 0.19682539682539682\right)\right)\right) + 1\right) + 1\right)
\end{array}
Initial program 61.7%
tan-sumN/A
/-lowering-/.f64N/A
+-lowering-+.f64N/A
tan-lowering-tan.f64N/A
tan-lowering-tan.f64N/A
--lowering--.f64N/A
*-lowering-*.f64N/A
tan-lowering-tan.f64N/A
tan-lowering-tan.f6461.9%
Applied egg-rr61.9%
Taylor expanded in eps around 0
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6461.9%
Simplified61.9%
Taylor expanded in eps around 0
*-commutativeN/A
sub-negN/A
mul-1-negN/A
remove-double-negN/A
*-lowering-*.f64N/A
+-commutativeN/A
+-lowering-+.f64N/A
/-lowering-/.f64N/A
pow-lowering-pow.f64N/A
sin-lowering-sin.f64N/A
pow-lowering-pow.f64N/A
cos-lowering-cos.f6499.5%
Simplified99.5%
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
unpow2N/A
associate-*l*N/A
*-lowering-*.f64N/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
(+
(*
x
(*
x
(+
(* (* x x) (+ 0.6666666666666666 (* x (* x 0.37777777777777777))))
1.0)))
1.0)))
double code(double x, double eps) {
return eps * ((x * (x * (((x * x) * (0.6666666666666666 + (x * (x * 0.37777777777777777)))) + 1.0))) + 1.0);
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
code = eps * ((x * (x * (((x * x) * (0.6666666666666666d0 + (x * (x * 0.37777777777777777d0)))) + 1.0d0))) + 1.0d0)
end function
public static double code(double x, double eps) {
return eps * ((x * (x * (((x * x) * (0.6666666666666666 + (x * (x * 0.37777777777777777)))) + 1.0))) + 1.0);
}
def code(x, eps): return eps * ((x * (x * (((x * x) * (0.6666666666666666 + (x * (x * 0.37777777777777777)))) + 1.0))) + 1.0)
function code(x, eps) return Float64(eps * Float64(Float64(x * Float64(x * Float64(Float64(Float64(x * x) * Float64(0.6666666666666666 + Float64(x * Float64(x * 0.37777777777777777)))) + 1.0))) + 1.0)) end
function tmp = code(x, eps) tmp = eps * ((x * (x * (((x * x) * (0.6666666666666666 + (x * (x * 0.37777777777777777)))) + 1.0))) + 1.0); end
code[x_, eps_] := N[(eps * N[(N[(x * N[(x * N[(N[(N[(x * x), $MachinePrecision] * N[(0.6666666666666666 + N[(x * N[(x * 0.37777777777777777), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\varepsilon \cdot \left(x \cdot \left(x \cdot \left(\left(x \cdot x\right) \cdot \left(0.6666666666666666 + x \cdot \left(x \cdot 0.37777777777777777\right)\right) + 1\right)\right) + 1\right)
\end{array}
Initial program 61.7%
tan-sumN/A
/-lowering-/.f64N/A
+-lowering-+.f64N/A
tan-lowering-tan.f64N/A
tan-lowering-tan.f64N/A
--lowering--.f64N/A
*-lowering-*.f64N/A
tan-lowering-tan.f64N/A
tan-lowering-tan.f6461.9%
Applied egg-rr61.9%
Taylor expanded in eps around 0
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6461.9%
Simplified61.9%
Taylor expanded in eps around 0
*-commutativeN/A
sub-negN/A
mul-1-negN/A
remove-double-negN/A
*-lowering-*.f64N/A
+-commutativeN/A
+-lowering-+.f64N/A
/-lowering-/.f64N/A
pow-lowering-pow.f64N/A
sin-lowering-sin.f64N/A
pow-lowering-pow.f64N/A
cos-lowering-cos.f6499.5%
Simplified99.5%
Taylor expanded in x around 0
unpow2N/A
associate-*l*N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-commutativeN/A
unpow2N/A
associate-*l*N/A
*-lowering-*.f64N/A
*-lowering-*.f6498.9%
Simplified98.9%
Final simplification98.9%
(FPCore (x eps) :precision binary64 (+ eps (* (* x x) (+ eps (* x (* x (* eps 0.6666666666666666)))))))
double code(double x, double eps) {
return eps + ((x * x) * (eps + (x * (x * (eps * 0.6666666666666666)))));
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
code = eps + ((x * x) * (eps + (x * (x * (eps * 0.6666666666666666d0)))))
end function
public static double code(double x, double eps) {
return eps + ((x * x) * (eps + (x * (x * (eps * 0.6666666666666666)))));
}
def code(x, eps): return eps + ((x * x) * (eps + (x * (x * (eps * 0.6666666666666666)))))
function code(x, eps) return Float64(eps + Float64(Float64(x * x) * Float64(eps + Float64(x * Float64(x * Float64(eps * 0.6666666666666666)))))) end
function tmp = code(x, eps) tmp = eps + ((x * x) * (eps + (x * (x * (eps * 0.6666666666666666))))); end
code[x_, eps_] := N[(eps + N[(N[(x * x), $MachinePrecision] * N[(eps + N[(x * N[(x * N[(eps * 0.6666666666666666), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\varepsilon + \left(x \cdot x\right) \cdot \left(\varepsilon + x \cdot \left(x \cdot \left(\varepsilon \cdot 0.6666666666666666\right)\right)\right)
\end{array}
Initial program 61.7%
tan-sumN/A
/-lowering-/.f64N/A
+-lowering-+.f64N/A
tan-lowering-tan.f64N/A
tan-lowering-tan.f64N/A
--lowering--.f64N/A
*-lowering-*.f64N/A
tan-lowering-tan.f64N/A
tan-lowering-tan.f6461.9%
Applied egg-rr61.9%
Taylor expanded in eps around 0
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6461.9%
Simplified61.9%
Taylor expanded in eps around 0
*-commutativeN/A
sub-negN/A
mul-1-negN/A
remove-double-negN/A
*-lowering-*.f64N/A
+-commutativeN/A
+-lowering-+.f64N/A
/-lowering-/.f64N/A
pow-lowering-pow.f64N/A
sin-lowering-sin.f64N/A
pow-lowering-pow.f64N/A
cos-lowering-cos.f6499.5%
Simplified99.5%
Taylor expanded in x around 0
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
associate-*r*N/A
*-commutativeN/A
unpow2N/A
associate-*l*N/A
*-commutativeN/A
associate-*r*N/A
*-lowering-*.f64N/A
associate-*r*N/A
*-commutativeN/A
*-lowering-*.f64N/A
*-lowering-*.f6498.8%
Simplified98.8%
Final simplification98.8%
(FPCore (x eps) :precision binary64 (* eps (+ (* x x) 1.0)))
double code(double x, double eps) {
return eps * ((x * x) + 1.0);
}
real(8) function code(x, eps)
real(8), intent (in) :: x
real(8), intent (in) :: eps
code = eps * ((x * x) + 1.0d0)
end function
public static double code(double x, double eps) {
return eps * ((x * x) + 1.0);
}
def code(x, eps): return eps * ((x * x) + 1.0)
function code(x, eps) return Float64(eps * Float64(Float64(x * x) + 1.0)) end
function tmp = code(x, eps) tmp = eps * ((x * x) + 1.0); end
code[x_, eps_] := N[(eps * N[(N[(x * x), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\varepsilon \cdot \left(x \cdot x + 1\right)
\end{array}
Initial program 61.7%
tan-sumN/A
/-lowering-/.f64N/A
+-lowering-+.f64N/A
tan-lowering-tan.f64N/A
tan-lowering-tan.f64N/A
--lowering--.f64N/A
*-lowering-*.f64N/A
tan-lowering-tan.f64N/A
tan-lowering-tan.f6461.9%
Applied egg-rr61.9%
Taylor expanded in eps around 0
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6461.9%
Simplified61.9%
Taylor expanded in eps around 0
*-commutativeN/A
sub-negN/A
mul-1-negN/A
remove-double-negN/A
*-lowering-*.f64N/A
+-commutativeN/A
+-lowering-+.f64N/A
/-lowering-/.f64N/A
pow-lowering-pow.f64N/A
sin-lowering-sin.f64N/A
pow-lowering-pow.f64N/A
cos-lowering-cos.f6499.5%
Simplified99.5%
Taylor expanded in x around 0
*-commutativeN/A
distribute-rgt1-inN/A
+-commutativeN/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)
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 61.7%
Taylor expanded in x around 0
/-lowering-/.f64N/A
sin-lowering-sin.f64N/A
cos-lowering-cos.f6498.7%
Simplified98.7%
Taylor expanded in eps around 0
Simplified98.7%
(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 2024161
(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)))