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f4fd7b4c72
* libm/common/s_fpclassify.c: Use __uint32_t instead of int to
manipulate float values in integer form.
* libm/common/sf_round.c: Ditto.
53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
/* Copyright (C) 2002 by Red Hat, Incorporated. All rights reserved.
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*
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* Permission to use, copy, modify, and distribute this software
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* is freely granted, provided that this notice is preserved.
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*/
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#include "fdlibm.h"
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int
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__fpclassifyf (float x)
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{
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__uint32_t w;
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GET_FLOAT_WORD(w,x);
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if (w == 0x00000000 || w == 0x80000000)
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return FP_ZERO;
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else if ((w >= 0x00800000 && w <= 0x7f7fffff) ||
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(w >= 0x80800000 && w <= 0xff7fffff))
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return FP_NORMAL;
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else if ((w >= 0x00000001 && w <= 0x007fffff) ||
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(w >= 0x80000001 && w <= 0x807fffff))
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return FP_SUBNORMAL;
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else if (w == 0x7f800000 || w == 0xff800000)
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return FP_INFINITE;
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else
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return FP_NAN;
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}
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int
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__fpclassifyd (double x)
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{
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__uint32_t msw, lsw;
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EXTRACT_WORDS(msw,lsw,x);
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if ((msw == 0x00000000 && lsw == 0x00000000) ||
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(msw == 0x80000000 && lsw == 0x00000000))
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return FP_ZERO;
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else if ((msw >= 0x00100000 && msw <= 0x7fefffff) ||
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(msw >= 0x80100000 && msw <= 0xffefffff))
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return FP_NORMAL;
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else if ((msw >= 0x00000000 && msw <= 0x000fffff) ||
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(msw >= 0x80000000 && msw <= 0x800fffff))
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/* zero is already handled above */
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return FP_SUBNORMAL;
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else if ((msw == 0x7ff00000 && lsw == 0x00000000) ||
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(msw == 0xfff00000 && lsw == 0x00000000))
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return FP_INFINITE;
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else
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return FP_NAN;
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}
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