Ruby  2.7.1p83(2020-03-31revisiona0c7c23c9cec0d0ffcba012279cd652d28ad5bf3)
Macros | Functions
lgamma_r.c File Reference
#include "ruby/missing.h"
#include <math.h>
#include <errno.h>

Go to the source code of this file.

Macros

#define PI   3.14159265358979324 /* $\pi$ */
 
#define LOG_2PI   1.83787706640934548 /* $\log 2\pi$ */
 
#define LOG_PI   1.14472988584940017 /* $\log_e \pi$ */
 
#define N   8
 
#define B0   1 /* Bernoulli numbers */
 
#define B1   (-1.0 / 2.0)
 
#define B2   ( 1.0 / 6.0)
 
#define B4   (-1.0 / 30.0)
 
#define B6   ( 1.0 / 42.0)
 
#define B8   (-1.0 / 30.0)
 
#define B10   ( 5.0 / 66.0)
 
#define B12   (-691.0 / 2730.0)
 
#define B14   ( 7.0 / 6.0)
 
#define B16   (-3617.0 / 510.0)
 

Functions

double lgamma_r (double x, int *signp)
 

Macro Definition Documentation

◆ B0

#define B0   1 /* Bernoulli numbers */

Definition at line 22 of file lgamma_r.c.

◆ B1

#define B1   (-1.0 / 2.0)

Definition at line 23 of file lgamma_r.c.

◆ B10

#define B10   ( 5.0 / 66.0)

Definition at line 28 of file lgamma_r.c.

◆ B12

#define B12   (-691.0 / 2730.0)

Definition at line 29 of file lgamma_r.c.

◆ B14

#define B14   ( 7.0 / 6.0)

Definition at line 30 of file lgamma_r.c.

◆ B16

#define B16   (-3617.0 / 510.0)

Definition at line 31 of file lgamma_r.c.

◆ B2

#define B2   ( 1.0 / 6.0)

Definition at line 24 of file lgamma_r.c.

◆ B4

#define B4   (-1.0 / 30.0)

Definition at line 25 of file lgamma_r.c.

◆ B6

#define B6   ( 1.0 / 42.0)

Definition at line 26 of file lgamma_r.c.

◆ B8

#define B8   (-1.0 / 30.0)

Definition at line 27 of file lgamma_r.c.

◆ LOG_2PI

#define LOG_2PI   1.83787706640934548 /* $\log 2\pi$ */

Definition at line 18 of file lgamma_r.c.

◆ LOG_PI

#define LOG_PI   1.14472988584940017 /* $\log_e \pi$ */

Definition at line 19 of file lgamma_r.c.

◆ N

#define N   8

Definition at line 20 of file lgamma_r.c.

◆ PI

#define PI   3.14159265358979324 /* $\pi$ */

Definition at line 17 of file lgamma_r.c.

Function Documentation

◆ lgamma_r()

double lgamma_r ( double  x,
int signp 
)

Definition at line 63 of file lgamma_r.c.

References ERANGE, errno, f, fmod(), HUGE_VAL, i, log(), LOG_PI, modf(), PI, signbit, and sin().