You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
45 lines
1.3 KiB
45 lines
1.3 KiB
/* values used by math functions -- IEEE 754 float version */
|
|
#include "wctype.h"
|
|
#include "xmath.h"
|
|
_STD_BEGIN
|
|
|
|
/* macros */
|
|
#define NBITS (16 + _FOFF)
|
|
#if _D0
|
|
#define INIT(w0) {0, w0}
|
|
#define INIT2(w0, w1) {w1, w0}
|
|
#else
|
|
#define INIT(w0) {w0, 0}
|
|
#define INIT2(w0, w1) {w0, w1}
|
|
#endif
|
|
/* static data */
|
|
_CRTIMP2 const _Dconst _FDenorm = {INIT2(0, 1)};
|
|
_CRTIMP2 const _Dconst _FEps = {INIT((_FBIAS - NBITS - 1) << _FOFF)};
|
|
_CRTIMP2 const _Dconst _FInf = {INIT(_FMAX << _FOFF)};
|
|
_CRTIMP2 const _Dconst _FNan = {INIT(_FSIGN | (_FMAX << _FOFF)
|
|
| (1 << (_FOFF - 1)))};
|
|
_CRTIMP2 const _Dconst _FSnan = {INIT(_FSIGN | (_FMAX << _FOFF))};
|
|
_CRTIMP2 const _Dconst _FRteps = {INIT((_FBIAS - NBITS / 2) << _FOFF)};
|
|
_CRTIMP2 const float _FXbig = (NBITS + 1) * 347L / 1000;
|
|
|
|
#if defined(__CENTERLINE__)
|
|
#define _DYNAMIC_INIT_CONST(x) \
|
|
(x._F = *(float *)(void *)(x._W))
|
|
_DYNAMIC_INIT_CONST(_FEps);
|
|
_DYNAMIC_INIT_CONST(_FInf);
|
|
_DYNAMIC_INIT_CONST(_FNan);
|
|
_DYNAMIC_INIT_CONST(_FRteps);
|
|
#endif
|
|
_STD_END
|
|
|
|
/*
|
|
* Copyright (c) 1994 by P.J. Plauger. ALL RIGHTS RESERVED.
|
|
* Consult your license regarding permissions and restrictions.
|
|
*/
|
|
|
|
/*
|
|
941029 pjp: added _STD machinery
|
|
950222 pjp: added signaling NaN, denorm minimum for C++
|
|
950405 pjp: corrected _FSnan punctuation
|
|
950505 pjp: corrected _FDenorm spelling
|
|
*/
|