missing/erf.c File Reference

#include "ruby/missing.h"
#include <stdio.h>
#include <math.h>

Include dependency graph for erf.c:

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Defines
#define	LOG_PI_OVER_2   0.572364942924700087071713675675 /* log_e(PI)/2 */
Functions
static double	q_gamma (double, double, double)
static double	p_gamma (double a, double x, double loggamma_a)
double	erf (double x)
double	erfc (double x)

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Define Documentation

#define LOG_PI_OVER_2   0.572364942924700087071713675675 /* log_e(PI)/2 */

Definition at line 69 of file erf.c.

Referenced by erf(), and erfc().

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Function Documentation

double erf

(

double

x

)

Definition at line 71 of file erf.c.

References finite(), isnan, LOG_PI_OVER_2, and p_gamma().

Referenced by math_erf().

double erfc

(

double

x

)

Definition at line 81 of file erf.c.

References finite(), isnan, LOG_PI_OVER_2, p_gamma(), and q_gamma().

Referenced by math_erfc().

static double p_gamma	(	double	a,
		double	x,
		double	loggamma_a
	)		[static]

Definition at line 29 of file erf.c.

References q_gamma(), result, and term.

Referenced by erf(), erfc(), and q_gamma().

static double q_gamma	(	double	a,
		double	x,
		double	loggamma_a
	)		[static]

Definition at line 48 of file erf.c.

References p_gamma(), and result.

Referenced by erfc(), and p_gamma().