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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [newlib/] [libm/] [common/] [s_fpclassify.c] - Blame information for rev 158

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Line No. Rev Author Line
1 148 jeremybenn
/* Copyright (C) 2002, 2007 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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__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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