53 lines
2.0 KiB
C
53 lines
2.0 KiB
C
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/*****************************************************************************/
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/*****************************************************************************/
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// portions extracted from musl-0.9.15 libm.h
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/*****************************************************************************/
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/*****************************************************************************/
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/* origin: FreeBSD /usr/src/lib/msun/src/math_private.h */
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/*
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* ====================================================
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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*
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* Developed at SunPro, a Sun Microsystems, Inc. business.
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* Permission to use, copy, modify, and distribute this
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* software is freely granted, provided that this notice
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* is preserved.
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* ====================================================
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*/
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#include <stdint.h>
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#include <math.h>
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#define FORCE_EVAL(x) do { \
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if (sizeof(x) == sizeof(float)) { \
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volatile float __x; \
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__x = (x); \
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(void)__x; \
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} else if (sizeof(x) == sizeof(double)) { \
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volatile double __x; \
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__x = (x); \
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(void)__x; \
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} else { \
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volatile long double __x; \
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__x = (x); \
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(void)__x; \
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} \
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} while(0)
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/* Get a 32 bit int from a float. */
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#define GET_FLOAT_WORD(w,d) \
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do { \
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union {float f; uint32_t i;} __u; \
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__u.f = (d); \
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(w) = __u.i; \
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} while (0)
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/* Set a float from a 32 bit int. */
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#define SET_FLOAT_WORD(d,w) \
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do { \
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union {float f; uint32_t i;} __u; \
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__u.i = (w); \
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(d) = __u.f; \
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} while (0)
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