Text.Parsec.Token:makeTokenParser from parsec-3.1.9, A

Percentage Accurate: 100.0% → 100.0%

Time: 2.5s

Alternatives: 5

Speedup: 1.0×

Specification

Math

\[\begin{array}{l} \\ \frac{x + y}{10} \end{array} \]

FPCore

(FPCore (x y) :precision binary64 (/ (+ x y) 10.0))

C

double code(double x, double y) {
	return (x + y) / 10.0;
}

Fortran

real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = (x + y) / 10.0d0
end function

Java

public static double code(double x, double y) {
	return (x + y) / 10.0;
}

Python

def code(x, y):
	return (x + y) / 10.0

Julia

function code(x, y)
	return Float64(Float64(x + y) / 10.0)
end

MATLAB

function tmp = code(x, y)
	tmp = (x + y) / 10.0;
end

Wolfram

code[x_, y_] := N[(N[(x + y), $MachinePrecision] / 10.0), $MachinePrecision]

Initial Program: 100.0% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ \frac{x + y}{10} \end{array} \]

FPCore

(FPCore (x y) :precision binary64 (/ (+ x y) 10.0))

C

double code(double x, double y) {
	return (x + y) / 10.0;
}

Fortran

real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = (x + y) / 10.0d0
end function

Java

public static double code(double x, double y) {
	return (x + y) / 10.0;
}

Python

def code(x, y):
	return (x + y) / 10.0

Julia

function code(x, y)
	return Float64(Float64(x + y) / 10.0)
end

MATLAB

function tmp = code(x, y)
	tmp = (x + y) / 10.0;
end

Wolfram

code[x_, y_] := N[(N[(x + y), $MachinePrecision] / 10.0), $MachinePrecision]

Alternative 1: 100.0% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ \frac{x + y}{10} \end{array} \]

FPCore

(FPCore (x y) :precision binary64 (/ (+ x y) 10.0))

C

double code(double x, double y) {
	return (x + y) / 10.0;
}

Fortran

real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = (x + y) / 10.0d0
end function

Java

public static double code(double x, double y) {
	return (x + y) / 10.0;
}

Python

def code(x, y):
	return (x + y) / 10.0

Julia

function code(x, y)
	return Float64(Float64(x + y) / 10.0)
end

MATLAB

function tmp = code(x, y)
	tmp = (x + y) / 10.0;
end

Wolfram

code[x_, y_] := N[(N[(x + y), $MachinePrecision] / 10.0), $MachinePrecision]

Derivation

1. Initial program 100.0%

   \[\frac{x + y}{10} \]
2. Add Preprocessing
3. Add Preprocessing

Alternative 2: 60.0% accurate, 0.6× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y \leq 1.9 \cdot 10^{-143}:\\ \;\;\;\;\frac{x}{10}\\ \mathbf{else}:\\ \;\;\;\;\frac{y}{10}\\ \end{array} \end{array} \]

FPCore

(FPCore (x y) :precision binary64 (if (<= y 1.9e-143) (/ x 10.0) (/ y 10.0)))

C

double code(double x, double y) {
	double tmp;
	if (y <= 1.9e-143) {
		tmp = x / 10.0;
	} else {
		tmp = y / 10.0;
	}
	return tmp;
}

Fortran

real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8) :: tmp
    if (y <= 1.9d-143) then
        tmp = x / 10.0d0
    else
        tmp = y / 10.0d0
    end if
    code = tmp
end function

Java

public static double code(double x, double y) {
	double tmp;
	if (y <= 1.9e-143) {
		tmp = x / 10.0;
	} else {
		tmp = y / 10.0;
	}
	return tmp;
}

Python

def code(x, y):
	tmp = 0
	if y <= 1.9e-143:
		tmp = x / 10.0
	else:
		tmp = y / 10.0
	return tmp

Julia

function code(x, y)
	tmp = 0.0
	if (y <= 1.9e-143)
		tmp = Float64(x / 10.0);
	else
		tmp = Float64(y / 10.0);
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y)
	tmp = 0.0;
	if (y <= 1.9e-143)
		tmp = x / 10.0;
	else
		tmp = y / 10.0;
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_] := If[LessEqual[y, 1.9e-143], N[(x / 10.0), $MachinePrecision], N[(y / 10.0), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if y < 1.89999999999999991e-143

   1. Initial program 100.0%

      \[\frac{x + y}{10} \]
   2. Add Preprocessing

   3. Taylor expanded in x around inf 61.5%

      \[\leadsto \frac{\color{blue}{x}}{10} \]

   if 1.89999999999999991e-143 < y

   1. Initial program 100.0%

      \[\frac{x + y}{10} \]
   2. Add Preprocessing

   3. Taylor expanded in x around 0 68.3%

      \[\leadsto \frac{\color{blue}{y}}{10} \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 3: 99.4% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ \left(x + y\right) \cdot 0.1 \end{array} \]

FPCore

(FPCore (x y) :precision binary64 (* (+ x y) 0.1))

C

double code(double x, double y) {
	return (x + y) * 0.1;
}

Fortran

real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = (x + y) * 0.1d0
end function

Java

public static double code(double x, double y) {
	return (x + y) * 0.1;
}

Python

def code(x, y):
	return (x + y) * 0.1

Julia

function code(x, y)
	return Float64(Float64(x + y) * 0.1)
end

MATLAB

function tmp = code(x, y)
	tmp = (x + y) * 0.1;
end

Wolfram

code[x_, y_] := N[(N[(x + y), $MachinePrecision] * 0.1), $MachinePrecision]

Derivation

1. Initial program 100.0%

   \[\frac{x + y}{10} \]
2. Step-by-step derivation

   1. *-rgt-identity 100.0%

      \[\leadsto \color{blue}{\frac{x + y}{10} \cdot 1} \]

   2. metadata-eval 100.0%

      \[\leadsto \frac{x + y}{10} \cdot \color{blue}{\left(--1\right)} \]

   3. associate-*l/ 100.0%

      \[\leadsto \color{blue}{\frac{\left(x + y\right) \cdot \left(--1\right)}{10}} \]

   4. associate-/l* 99.4%

      \[\leadsto \color{blue}{\left(x + y\right) \cdot \frac{--1}{10}} \]

   5. metadata-eval 99.4%

      \[\leadsto \left(x + y\right) \cdot \frac{\color{blue}{1}}{10} \]

   6. metadata-eval 99.4%

      \[\leadsto \left(x + y\right) \cdot \color{blue}{0.1} \]

3. Simplified 99.4%

   \[\leadsto \color{blue}{\left(x + y\right) \cdot 0.1} \]
4. Add Preprocessing
5. Add Preprocessing

Alternative 4: 50.8% accurate, 1.7× speedup

Math

\[\begin{array}{l} \\ \frac{x}{10} \end{array} \]

FPCore

(FPCore (x y) :precision binary64 (/ x 10.0))

C

double code(double x, double y) {
	return x / 10.0;
}

Fortran

real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = x / 10.0d0
end function

Java

public static double code(double x, double y) {
	return x / 10.0;
}

Python

def code(x, y):
	return x / 10.0

Julia

function code(x, y)
	return Float64(x / 10.0)
end

MATLAB

function tmp = code(x, y)
	tmp = x / 10.0;
end

Wolfram

code[x_, y_] := N[(x / 10.0), $MachinePrecision]

Derivation

1. Initial program 100.0%

   \[\frac{x + y}{10} \]
2. Add Preprocessing

3. Taylor expanded in x around inf 50.9%

   \[\leadsto \frac{\color{blue}{x}}{10} \]
4. Add Preprocessing

Alternative 5: 50.5% accurate, 1.7× speedup

Math

\[\begin{array}{l} \\ x \cdot 0.1 \end{array} \]

FPCore

(FPCore (x y) :precision binary64 (* x 0.1))

C

double code(double x, double y) {
	return x * 0.1;
}

Fortran

real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = x * 0.1d0
end function

Java

public static double code(double x, double y) {
	return x * 0.1;
}

Python

def code(x, y):
	return x * 0.1

Julia

function code(x, y)
	return Float64(x * 0.1)
end

MATLAB

function tmp = code(x, y)
	tmp = x * 0.1;
end

Wolfram

code[x_, y_] := N[(x * 0.1), $MachinePrecision]

Derivation

1. Initial program 100.0%

   \[\frac{x + y}{10} \]
2. Step-by-step derivation

   1. *-rgt-identity 100.0%

      \[\leadsto \color{blue}{\frac{x + y}{10} \cdot 1} \]

   2. metadata-eval 100.0%

      \[\leadsto \frac{x + y}{10} \cdot \color{blue}{\left(--1\right)} \]

   3. associate-*l/ 100.0%

      \[\leadsto \color{blue}{\frac{\left(x + y\right) \cdot \left(--1\right)}{10}} \]

   4. associate-/l* 99.4%

      \[\leadsto \color{blue}{\left(x + y\right) \cdot \frac{--1}{10}} \]

   5. metadata-eval 99.4%

      \[\leadsto \left(x + y\right) \cdot \frac{\color{blue}{1}}{10} \]

   6. metadata-eval 99.4%

      \[\leadsto \left(x + y\right) \cdot \color{blue}{0.1} \]

3. Simplified 99.4%

   \[\leadsto \color{blue}{\left(x + y\right) \cdot 0.1} \]
4. Add Preprocessing

5. Taylor expanded in x around inf 50.6%

   \[\leadsto \color{blue}{x} \cdot 0.1 \]
6. Add Preprocessing

Reproduce

herbie shell --seed 2024116 
(FPCore (x y)
  :name "Text.Parsec.Token:makeTokenParser from parsec-3.1.9, A"
  :precision binary64
  (/ (+ x y) 10.0))