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/* sf_isnan.c -- float version of s_isnan.c.

 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.

 */

/*

 * ====================================================

 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.

 *

 * Developed at SunPro, a Sun Microsystems, Inc. business.

 * Permission to use, copy, modify, and distribute this

 * software is freely granted, provided that this notice

 * is preserved.

 * ====================================================

 */

/*

 * isnanf(x) returns 1 is x is nan, else 0;

 * no branching!

 */

#include "fdlibm.h"

#ifdef __STDC__

        int isnanf(float x)

#else

        int isnanf(x)

        float x;

#endif

{

        __int32_t ix;

        GET_FLOAT_WORD(ix,x);

        ix &= 0x7fffffff;

        ix = 0x7f800000 - ix;

        return (int)(((__uint32_t)(ix))>>31);

}

#ifdef _DOUBLE_IS_32BITS

#ifdef __STDC__

        int isnan(double x)

#else

        int isnan(x)

        double x;

#endif

{

        return isnanf((float) x);

}

#endif /* defined(_DOUBLE_IS_32BITS) */