base/math/rndint.c File Reference

#include <limits.h>
#include <math.h>

Include dependency graph for rndint.c:

Go to the source code of this file.

Data Structures
union	DblInHex
Defines
#define	asm(x)
#define	SET_INVALID   0x01000000UL
Functions
double	nearbyint (double x)
long int	rinttol (double x)
double	round (double x)
long int	roundtol (double x)
double	trunc (double x)
Variables
const unsigned long int	signMask = 0x80000000ul
const double	twoTo52 = 4503599627370496.0
const double	doubleToLong = 4503603922337792.0
const DblInHex	Huge = {{ 0x7FF00000, 0x00000000 }}
const DblInHex	TOWARDZERO = {{ 0x00000000, 0x00000001 }}

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Define Documentation

#define asm (  x   )

Definition at line 51 of file rndint.c.

#define SET_INVALID   0x01000000UL

Definition at line 54 of file rndint.c. Referenced by rinttol(), and roundtol().

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Function Documentation

double nearbyint (  double  x  )

Definition at line 176 of file rndint.c. References copysign(), fabs(), and twoTo52. Here is the call graph for this function:

long int rinttol (  double  x  )

Definition at line 210 of file rndint.c. References DblInHex::dbl, doubleToLong, SET_INVALID, signMask, twoTo52, and DblInHex::words.

double round (  double  x  )

Definition at line 301 of file rndint.c. References DblInHex::dbl, signMask, twoTo52, and DblInHex::words.

long int roundtol (  double  x  )

Definition at line 397 of file rndint.c. References DblInHex::dbl, doubleToLong, SET_INVALID, signMask, and DblInHex::words.

double trunc (  double  x  )

Definition at line 497 of file rndint.c. References DblInHex::dbl, signMask, twoTo52, and DblInHex::words.

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Variable Documentation

const double doubleToLong = 4503603922337792.0 [static]

Definition at line 72 of file rndint.c. Referenced by rinttol(), and roundtol().

const DblInHex Huge = {{ 0x7FF00000, 0x00000000 }} [static]

Definition at line 73 of file rndint.c.

const unsigned long int signMask = 0x80000000ul [static]

Definition at line 70 of file rndint.c. Referenced by rinttol(), round(), roundtol(), and trunc().

const DblInHex TOWARDZERO = {{ 0x00000000, 0x00000001 }} [static]

Definition at line 74 of file rndint.c.

const double twoTo52 = 4503599627370496.0 [static]

Definition at line 71 of file rndint.c. Referenced by nearbyint(), rinttol(), round(), and trunc().

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