
(FPCore (m v) :precision binary64 (* (- (/ (* m (- 1.0 m)) v) 1.0) (- 1.0 m)))
double code(double m, double v) {
return (((m * (1.0 - m)) / v) - 1.0) * (1.0 - m);
}
real(8) function code(m, v)
real(8), intent (in) :: m
real(8), intent (in) :: v
code = (((m * (1.0d0 - m)) / v) - 1.0d0) * (1.0d0 - m)
end function
public static double code(double m, double v) {
return (((m * (1.0 - m)) / v) - 1.0) * (1.0 - m);
}
def code(m, v): return (((m * (1.0 - m)) / v) - 1.0) * (1.0 - m)
function code(m, v) return Float64(Float64(Float64(Float64(m * Float64(1.0 - m)) / v) - 1.0) * Float64(1.0 - m)) end
function tmp = code(m, v) tmp = (((m * (1.0 - m)) / v) - 1.0) * (1.0 - m); end
code[m_, v_] := N[(N[(N[(N[(m * N[(1.0 - m), $MachinePrecision]), $MachinePrecision] / v), $MachinePrecision] - 1.0), $MachinePrecision] * N[(1.0 - m), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(\frac{m \cdot \left(1 - m\right)}{v} - 1\right) \cdot \left(1 - m\right)
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 13 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (m v) :precision binary64 (* (- (/ (* m (- 1.0 m)) v) 1.0) (- 1.0 m)))
double code(double m, double v) {
return (((m * (1.0 - m)) / v) - 1.0) * (1.0 - m);
}
real(8) function code(m, v)
real(8), intent (in) :: m
real(8), intent (in) :: v
code = (((m * (1.0d0 - m)) / v) - 1.0d0) * (1.0d0 - m)
end function
public static double code(double m, double v) {
return (((m * (1.0 - m)) / v) - 1.0) * (1.0 - m);
}
def code(m, v): return (((m * (1.0 - m)) / v) - 1.0) * (1.0 - m)
function code(m, v) return Float64(Float64(Float64(Float64(m * Float64(1.0 - m)) / v) - 1.0) * Float64(1.0 - m)) end
function tmp = code(m, v) tmp = (((m * (1.0 - m)) / v) - 1.0) * (1.0 - m); end
code[m_, v_] := N[(N[(N[(N[(m * N[(1.0 - m), $MachinePrecision]), $MachinePrecision] / v), $MachinePrecision] - 1.0), $MachinePrecision] * N[(1.0 - m), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(\frac{m \cdot \left(1 - m\right)}{v} - 1\right) \cdot \left(1 - m\right)
\end{array}
(FPCore (m v) :precision binary64 (* (+ (/ (- m (* m m)) v) -1.0) (- 1.0 m)))
double code(double m, double v) {
return (((m - (m * m)) / v) + -1.0) * (1.0 - m);
}
real(8) function code(m, v)
real(8), intent (in) :: m
real(8), intent (in) :: v
code = (((m - (m * m)) / v) + (-1.0d0)) * (1.0d0 - m)
end function
public static double code(double m, double v) {
return (((m - (m * m)) / v) + -1.0) * (1.0 - m);
}
def code(m, v): return (((m - (m * m)) / v) + -1.0) * (1.0 - m)
function code(m, v) return Float64(Float64(Float64(Float64(m - Float64(m * m)) / v) + -1.0) * Float64(1.0 - m)) end
function tmp = code(m, v) tmp = (((m - (m * m)) / v) + -1.0) * (1.0 - m); end
code[m_, v_] := N[(N[(N[(N[(m - N[(m * m), $MachinePrecision]), $MachinePrecision] / v), $MachinePrecision] + -1.0), $MachinePrecision] * N[(1.0 - m), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(\frac{m - m \cdot m}{v} + -1\right) \cdot \left(1 - m\right)
\end{array}
Initial program 99.9%
sub-neg99.9%
distribute-rgt-in99.9%
*-un-lft-identity99.9%
Applied egg-rr99.9%
Final simplification99.9%
(FPCore (m v) :precision binary64 (if (<= m 0.62) (+ -1.0 (* m (/ (+ 1.0 (* m -2.0)) v))) (* (- 1.0 m) (- -1.0 (* m (/ m v))))))
double code(double m, double v) {
double tmp;
if (m <= 0.62) {
tmp = -1.0 + (m * ((1.0 + (m * -2.0)) / v));
} else {
tmp = (1.0 - m) * (-1.0 - (m * (m / v)));
}
return tmp;
}
real(8) function code(m, v)
real(8), intent (in) :: m
real(8), intent (in) :: v
real(8) :: tmp
if (m <= 0.62d0) then
tmp = (-1.0d0) + (m * ((1.0d0 + (m * (-2.0d0))) / v))
else
tmp = (1.0d0 - m) * ((-1.0d0) - (m * (m / v)))
end if
code = tmp
end function
public static double code(double m, double v) {
double tmp;
if (m <= 0.62) {
tmp = -1.0 + (m * ((1.0 + (m * -2.0)) / v));
} else {
tmp = (1.0 - m) * (-1.0 - (m * (m / v)));
}
return tmp;
}
def code(m, v): tmp = 0 if m <= 0.62: tmp = -1.0 + (m * ((1.0 + (m * -2.0)) / v)) else: tmp = (1.0 - m) * (-1.0 - (m * (m / v))) return tmp
function code(m, v) tmp = 0.0 if (m <= 0.62) tmp = Float64(-1.0 + Float64(m * Float64(Float64(1.0 + Float64(m * -2.0)) / v))); else tmp = Float64(Float64(1.0 - m) * Float64(-1.0 - Float64(m * Float64(m / v)))); end return tmp end
function tmp_2 = code(m, v) tmp = 0.0; if (m <= 0.62) tmp = -1.0 + (m * ((1.0 + (m * -2.0)) / v)); else tmp = (1.0 - m) * (-1.0 - (m * (m / v))); end tmp_2 = tmp; end
code[m_, v_] := If[LessEqual[m, 0.62], N[(-1.0 + N[(m * N[(N[(1.0 + N[(m * -2.0), $MachinePrecision]), $MachinePrecision] / v), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(1.0 - m), $MachinePrecision] * N[(-1.0 - N[(m * N[(m / v), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;m \leq 0.62:\\
\;\;\;\;-1 + m \cdot \frac{1 + m \cdot -2}{v}\\
\mathbf{else}:\\
\;\;\;\;\left(1 - m\right) \cdot \left(-1 - m \cdot \frac{m}{v}\right)\\
\end{array}
\end{array}
if m < 0.619999999999999996Initial program 99.9%
*-commutative99.9%
sub-neg99.9%
associate-/l*99.8%
metadata-eval99.8%
Simplified99.8%
Taylor expanded in m around 0 99.4%
Taylor expanded in v around 0 99.6%
associate-/l*99.5%
*-commutative99.5%
Simplified99.5%
if 0.619999999999999996 < m Initial program 99.9%
*-commutative99.9%
sub-neg99.9%
associate-/l*99.9%
metadata-eval99.9%
Simplified99.9%
Taylor expanded in m around inf 97.5%
neg-mul-197.5%
distribute-neg-frac297.5%
Simplified97.5%
Final simplification98.5%
(FPCore (m v) :precision binary64 (* (- 1.0 m) (+ -1.0 (* m (/ (- 1.0 m) v)))))
double code(double m, double v) {
return (1.0 - m) * (-1.0 + (m * ((1.0 - m) / v)));
}
real(8) function code(m, v)
real(8), intent (in) :: m
real(8), intent (in) :: v
code = (1.0d0 - m) * ((-1.0d0) + (m * ((1.0d0 - m) / v)))
end function
public static double code(double m, double v) {
return (1.0 - m) * (-1.0 + (m * ((1.0 - m) / v)));
}
def code(m, v): return (1.0 - m) * (-1.0 + (m * ((1.0 - m) / v)))
function code(m, v) return Float64(Float64(1.0 - m) * Float64(-1.0 + Float64(m * Float64(Float64(1.0 - m) / v)))) end
function tmp = code(m, v) tmp = (1.0 - m) * (-1.0 + (m * ((1.0 - m) / v))); end
code[m_, v_] := N[(N[(1.0 - m), $MachinePrecision] * N[(-1.0 + N[(m * N[(N[(1.0 - m), $MachinePrecision] / v), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(1 - m\right) \cdot \left(-1 + m \cdot \frac{1 - m}{v}\right)
\end{array}
Initial program 99.9%
*-commutative99.9%
sub-neg99.9%
associate-/l*99.8%
metadata-eval99.8%
Simplified99.8%
Final simplification99.8%
(FPCore (m v) :precision binary64 (* (- 1.0 m) (+ (/ m (/ v (- 1.0 m))) -1.0)))
double code(double m, double v) {
return (1.0 - m) * ((m / (v / (1.0 - m))) + -1.0);
}
real(8) function code(m, v)
real(8), intent (in) :: m
real(8), intent (in) :: v
code = (1.0d0 - m) * ((m / (v / (1.0d0 - m))) + (-1.0d0))
end function
public static double code(double m, double v) {
return (1.0 - m) * ((m / (v / (1.0 - m))) + -1.0);
}
def code(m, v): return (1.0 - m) * ((m / (v / (1.0 - m))) + -1.0)
function code(m, v) return Float64(Float64(1.0 - m) * Float64(Float64(m / Float64(v / Float64(1.0 - m))) + -1.0)) end
function tmp = code(m, v) tmp = (1.0 - m) * ((m / (v / (1.0 - m))) + -1.0); end
code[m_, v_] := N[(N[(1.0 - m), $MachinePrecision] * N[(N[(m / N[(v / N[(1.0 - m), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + -1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(1 - m\right) \cdot \left(\frac{m}{\frac{v}{1 - m}} + -1\right)
\end{array}
Initial program 99.9%
*-commutative99.9%
sub-neg99.9%
associate-/l*99.8%
metadata-eval99.8%
Simplified99.8%
clear-num99.8%
un-div-inv99.9%
Applied egg-rr99.9%
Final simplification99.9%
(FPCore (m v) :precision binary64 (* (- 1.0 m) (+ (/ (* m (- 1.0 m)) v) -1.0)))
double code(double m, double v) {
return (1.0 - m) * (((m * (1.0 - m)) / v) + -1.0);
}
real(8) function code(m, v)
real(8), intent (in) :: m
real(8), intent (in) :: v
code = (1.0d0 - m) * (((m * (1.0d0 - m)) / v) + (-1.0d0))
end function
public static double code(double m, double v) {
return (1.0 - m) * (((m * (1.0 - m)) / v) + -1.0);
}
def code(m, v): return (1.0 - m) * (((m * (1.0 - m)) / v) + -1.0)
function code(m, v) return Float64(Float64(1.0 - m) * Float64(Float64(Float64(m * Float64(1.0 - m)) / v) + -1.0)) end
function tmp = code(m, v) tmp = (1.0 - m) * (((m * (1.0 - m)) / v) + -1.0); end
code[m_, v_] := N[(N[(1.0 - m), $MachinePrecision] * N[(N[(N[(m * N[(1.0 - m), $MachinePrecision]), $MachinePrecision] / v), $MachinePrecision] + -1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(1 - m\right) \cdot \left(\frac{m \cdot \left(1 - m\right)}{v} + -1\right)
\end{array}
Initial program 99.9%
Final simplification99.9%
(FPCore (m v) :precision binary64 (+ (* (+ m 1.0) (/ m v)) (+ m -1.0)))
double code(double m, double v) {
return ((m + 1.0) * (m / v)) + (m + -1.0);
}
real(8) function code(m, v)
real(8), intent (in) :: m
real(8), intent (in) :: v
code = ((m + 1.0d0) * (m / v)) + (m + (-1.0d0))
end function
public static double code(double m, double v) {
return ((m + 1.0) * (m / v)) + (m + -1.0);
}
def code(m, v): return ((m + 1.0) * (m / v)) + (m + -1.0)
function code(m, v) return Float64(Float64(Float64(m + 1.0) * Float64(m / v)) + Float64(m + -1.0)) end
function tmp = code(m, v) tmp = ((m + 1.0) * (m / v)) + (m + -1.0); end
code[m_, v_] := N[(N[(N[(m + 1.0), $MachinePrecision] * N[(m / v), $MachinePrecision]), $MachinePrecision] + N[(m + -1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(m + 1\right) \cdot \frac{m}{v} + \left(m + -1\right)
\end{array}
Initial program 99.9%
Taylor expanded in m around 0 49.1%
*-commutative49.1%
sub-neg49.1%
metadata-eval49.1%
distribute-rgt-in49.1%
sub-neg49.1%
add-sqr-sqrt0.0%
sqrt-unprod86.5%
sqr-neg86.5%
sqrt-unprod86.5%
add-sqr-sqrt86.5%
sub-neg86.5%
distribute-lft-in86.5%
metadata-eval86.5%
add-sqr-sqrt0.0%
sqrt-unprod61.1%
sqr-neg61.1%
sqrt-unprod86.5%
add-sqr-sqrt86.5%
neg-mul-186.5%
add-sqr-sqrt0.0%
sqrt-unprod86.5%
sqr-neg86.5%
sqrt-unprod86.5%
add-sqr-sqrt86.5%
Applied egg-rr86.5%
Final simplification86.5%
(FPCore (m v) :precision binary64 (+ -1.0 (+ m (/ (* m (+ m 1.0)) v))))
double code(double m, double v) {
return -1.0 + (m + ((m * (m + 1.0)) / v));
}
real(8) function code(m, v)
real(8), intent (in) :: m
real(8), intent (in) :: v
code = (-1.0d0) + (m + ((m * (m + 1.0d0)) / v))
end function
public static double code(double m, double v) {
return -1.0 + (m + ((m * (m + 1.0)) / v));
}
def code(m, v): return -1.0 + (m + ((m * (m + 1.0)) / v))
function code(m, v) return Float64(-1.0 + Float64(m + Float64(Float64(m * Float64(m + 1.0)) / v))) end
function tmp = code(m, v) tmp = -1.0 + (m + ((m * (m + 1.0)) / v)); end
code[m_, v_] := N[(-1.0 + N[(m + N[(N[(m * N[(m + 1.0), $MachinePrecision]), $MachinePrecision] / v), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
-1 + \left(m + \frac{m \cdot \left(m + 1\right)}{v}\right)
\end{array}
Initial program 99.9%
Taylor expanded in m around 0 49.1%
*-commutative49.1%
sub-neg49.1%
metadata-eval49.1%
distribute-rgt-in49.1%
sub-neg49.1%
add-sqr-sqrt0.0%
sqrt-unprod86.5%
sqr-neg86.5%
sqrt-unprod86.5%
add-sqr-sqrt86.5%
sub-neg86.5%
distribute-lft-in86.5%
metadata-eval86.5%
add-sqr-sqrt0.0%
sqrt-unprod61.1%
sqr-neg61.1%
sqrt-unprod86.5%
add-sqr-sqrt86.5%
neg-mul-186.5%
add-sqr-sqrt0.0%
sqrt-unprod86.5%
sqr-neg86.5%
sqrt-unprod86.5%
add-sqr-sqrt86.5%
Applied egg-rr86.5%
Taylor expanded in v around inf 86.5%
Final simplification86.5%
(FPCore (m v) :precision binary64 (* (+ m 1.0) (+ -1.0 (/ m v))))
double code(double m, double v) {
return (m + 1.0) * (-1.0 + (m / v));
}
real(8) function code(m, v)
real(8), intent (in) :: m
real(8), intent (in) :: v
code = (m + 1.0d0) * ((-1.0d0) + (m / v))
end function
public static double code(double m, double v) {
return (m + 1.0) * (-1.0 + (m / v));
}
def code(m, v): return (m + 1.0) * (-1.0 + (m / v))
function code(m, v) return Float64(Float64(m + 1.0) * Float64(-1.0 + Float64(m / v))) end
function tmp = code(m, v) tmp = (m + 1.0) * (-1.0 + (m / v)); end
code[m_, v_] := N[(N[(m + 1.0), $MachinePrecision] * N[(-1.0 + N[(m / v), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(m + 1\right) \cdot \left(-1 + \frac{m}{v}\right)
\end{array}
Initial program 99.9%
Taylor expanded in m around 0 49.1%
sub-neg49.1%
distribute-rgt-in49.1%
*-un-lft-identity49.1%
sub-neg49.1%
metadata-eval49.1%
add-sqr-sqrt0.0%
sqrt-unprod86.5%
sqr-neg86.5%
sqrt-unprod86.5%
add-sqr-sqrt86.5%
sub-neg86.5%
metadata-eval86.5%
Applied egg-rr86.5%
distribute-rgt1-in86.5%
Simplified86.5%
Final simplification86.5%
(FPCore (m v) :precision binary64 (+ -1.0 (/ (* m (+ m 1.0)) v)))
double code(double m, double v) {
return -1.0 + ((m * (m + 1.0)) / v);
}
real(8) function code(m, v)
real(8), intent (in) :: m
real(8), intent (in) :: v
code = (-1.0d0) + ((m * (m + 1.0d0)) / v)
end function
public static double code(double m, double v) {
return -1.0 + ((m * (m + 1.0)) / v);
}
def code(m, v): return -1.0 + ((m * (m + 1.0)) / v)
function code(m, v) return Float64(-1.0 + Float64(Float64(m * Float64(m + 1.0)) / v)) end
function tmp = code(m, v) tmp = -1.0 + ((m * (m + 1.0)) / v); end
code[m_, v_] := N[(-1.0 + N[(N[(m * N[(m + 1.0), $MachinePrecision]), $MachinePrecision] / v), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
-1 + \frac{m \cdot \left(m + 1\right)}{v}
\end{array}
Initial program 99.9%
Taylor expanded in m around 0 49.1%
*-commutative49.1%
sub-neg49.1%
metadata-eval49.1%
distribute-rgt-in49.1%
sub-neg49.1%
add-sqr-sqrt0.0%
sqrt-unprod86.5%
sqr-neg86.5%
sqrt-unprod86.5%
add-sqr-sqrt86.5%
sub-neg86.5%
distribute-lft-in86.5%
metadata-eval86.5%
add-sqr-sqrt0.0%
sqrt-unprod61.1%
sqr-neg61.1%
sqrt-unprod86.5%
add-sqr-sqrt86.5%
neg-mul-186.5%
add-sqr-sqrt0.0%
sqrt-unprod86.5%
sqr-neg86.5%
sqrt-unprod86.5%
add-sqr-sqrt86.5%
Applied egg-rr86.5%
Taylor expanded in v around inf 86.5%
Taylor expanded in v around 0 86.5%
Final simplification86.5%
(FPCore (m v) :precision binary64 (if (<= m 6e-184) -1.0 (/ m v)))
double code(double m, double v) {
double tmp;
if (m <= 6e-184) {
tmp = -1.0;
} else {
tmp = m / v;
}
return tmp;
}
real(8) function code(m, v)
real(8), intent (in) :: m
real(8), intent (in) :: v
real(8) :: tmp
if (m <= 6d-184) then
tmp = -1.0d0
else
tmp = m / v
end if
code = tmp
end function
public static double code(double m, double v) {
double tmp;
if (m <= 6e-184) {
tmp = -1.0;
} else {
tmp = m / v;
}
return tmp;
}
def code(m, v): tmp = 0 if m <= 6e-184: tmp = -1.0 else: tmp = m / v return tmp
function code(m, v) tmp = 0.0 if (m <= 6e-184) tmp = -1.0; else tmp = Float64(m / v); end return tmp end
function tmp_2 = code(m, v) tmp = 0.0; if (m <= 6e-184) tmp = -1.0; else tmp = m / v; end tmp_2 = tmp; end
code[m_, v_] := If[LessEqual[m, 6e-184], -1.0, N[(m / v), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;m \leq 6 \cdot 10^{-184}:\\
\;\;\;\;-1\\
\mathbf{else}:\\
\;\;\;\;\frac{m}{v}\\
\end{array}
\end{array}
if m < 5.99999999999999982e-184Initial program 100.0%
*-commutative100.0%
sub-neg100.0%
associate-/l*99.9%
metadata-eval99.9%
Simplified99.9%
Taylor expanded in m around 0 79.6%
if 5.99999999999999982e-184 < m Initial program 99.9%
Taylor expanded in m around 0 36.1%
Taylor expanded in v around 0 26.7%
Taylor expanded in m around 0 59.6%
Final simplification63.7%
(FPCore (m v) :precision binary64 (+ -1.0 (+ m (/ m v))))
double code(double m, double v) {
return -1.0 + (m + (m / v));
}
real(8) function code(m, v)
real(8), intent (in) :: m
real(8), intent (in) :: v
code = (-1.0d0) + (m + (m / v))
end function
public static double code(double m, double v) {
return -1.0 + (m + (m / v));
}
def code(m, v): return -1.0 + (m + (m / v))
function code(m, v) return Float64(-1.0 + Float64(m + Float64(m / v))) end
function tmp = code(m, v) tmp = -1.0 + (m + (m / v)); end
code[m_, v_] := N[(-1.0 + N[(m + N[(m / v), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
-1 + \left(m + \frac{m}{v}\right)
\end{array}
Initial program 99.9%
*-commutative99.9%
sub-neg99.9%
associate-/l*99.8%
metadata-eval99.8%
Simplified99.8%
Taylor expanded in m around 0 49.4%
Taylor expanded in m around 0 75.3%
distribute-rgt-in75.3%
*-lft-identity75.3%
associate-*l/75.3%
*-lft-identity75.3%
Simplified75.3%
Final simplification75.3%
(FPCore (m v) :precision binary64 (+ m -1.0))
double code(double m, double v) {
return m + -1.0;
}
real(8) function code(m, v)
real(8), intent (in) :: m
real(8), intent (in) :: v
code = m + (-1.0d0)
end function
public static double code(double m, double v) {
return m + -1.0;
}
def code(m, v): return m + -1.0
function code(m, v) return Float64(m + -1.0) end
function tmp = code(m, v) tmp = m + -1.0; end
code[m_, v_] := N[(m + -1.0), $MachinePrecision]
\begin{array}{l}
\\
m + -1
\end{array}
Initial program 99.9%
*-commutative99.9%
sub-neg99.9%
associate-/l*99.8%
metadata-eval99.8%
Simplified99.8%
Taylor expanded in v around inf 26.7%
neg-mul-126.7%
sub-neg26.7%
+-commutative26.7%
distribute-neg-in26.7%
remove-double-neg26.7%
metadata-eval26.7%
Simplified26.7%
Final simplification26.7%
(FPCore (m v) :precision binary64 -1.0)
double code(double m, double v) {
return -1.0;
}
real(8) function code(m, v)
real(8), intent (in) :: m
real(8), intent (in) :: v
code = -1.0d0
end function
public static double code(double m, double v) {
return -1.0;
}
def code(m, v): return -1.0
function code(m, v) return -1.0 end
function tmp = code(m, v) tmp = -1.0; end
code[m_, v_] := -1.0
\begin{array}{l}
\\
-1
\end{array}
Initial program 99.9%
*-commutative99.9%
sub-neg99.9%
associate-/l*99.8%
metadata-eval99.8%
Simplified99.8%
Taylor expanded in m around 0 24.2%
Final simplification24.2%
herbie shell --seed 2024075
(FPCore (m v)
:name "b parameter of renormalized beta distribution"
:precision binary64
:pre (and (and (< 0.0 m) (< 0.0 v)) (< v 0.25))
(* (- (/ (* m (- 1.0 m)) v) 1.0) (- 1.0 m)))