46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
/* values used by math functions -- IEEE 754 float version */
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#include "wctype.h"
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#include "xmath.h"
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_STD_BEGIN
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/* macros */
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#define NBITS (16 + _FOFF)
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#if _D0
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#define INIT(w0) {0, w0}
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#define INIT2(w0, w1) {w1, w0}
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#else
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#define INIT(w0) {w0, 0}
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#define INIT2(w0, w1) {w0, w1}
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#endif
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/* static data */
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_CRTIMP2 const _Dconst _FDenorm = {INIT2(0, 1)};
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_CRTIMP2 const _Dconst _FEps = {INIT((_FBIAS - NBITS - 1) << _FOFF)};
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_CRTIMP2 const _Dconst _FInf = {INIT(_FMAX << _FOFF)};
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_CRTIMP2 const _Dconst _FNan = {INIT(_FSIGN | (_FMAX << _FOFF)
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| (1 << (_FOFF - 1)))};
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_CRTIMP2 const _Dconst _FSnan = {INIT(_FSIGN | (_FMAX << _FOFF))};
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_CRTIMP2 const _Dconst _FRteps = {INIT((_FBIAS - NBITS / 2) << _FOFF)};
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_CRTIMP2 const float _FXbig = (NBITS + 1) * 347L / 1000;
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#if defined(__CENTERLINE__)
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#define _DYNAMIC_INIT_CONST(x) \
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(x._F = *(float *)(void *)(x._W))
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_DYNAMIC_INIT_CONST(_FEps);
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_DYNAMIC_INIT_CONST(_FInf);
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_DYNAMIC_INIT_CONST(_FNan);
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_DYNAMIC_INIT_CONST(_FRteps);
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#endif
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_STD_END
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/*
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* Copyright (c) 1994 by P.J. Plauger. ALL RIGHTS RESERVED.
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* Consult your license regarding permissions and restrictions.
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*/
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/*
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941029 pjp: added _STD machinery
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950222 pjp: added signaling NaN, denorm minimum for C++
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950405 pjp: corrected _FSnan punctuation
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950505 pjp: corrected _FDenorm spelling
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*/
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