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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libm/] [common/] [sf_isnan.c] - Blame information for rev 207

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1 207 jeremybenn
/* sf_c_isnan.c -- float version of s_c_isnan.c.
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 */
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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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/*
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 * isnanf(x) returns 1 is x is nan, else 0;
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 *
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 * isnanf is an extension declared in <ieeefp.h>.
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 */
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#include "fdlibm.h"
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#include <ieeefp.h>
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#undef isnanf
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int
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_DEFUN (isnanf, (x),
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        float x)
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{
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        __int32_t ix;
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        GET_FLOAT_WORD(ix,x);
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        ix &= 0x7fffffff;
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        return FLT_UWORD_IS_NAN(ix);
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}
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#ifdef _DOUBLE_IS_32BITS
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#undef isnan
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int
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_DEFUN (isnan, (x),
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        double x)
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{
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        return isnanf((float) x);
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}
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#endif /* defined(_DOUBLE_IS_32BITS) */

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