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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [newlib/] [libm/] [common/] [sf_isnan.c] - Rev 158
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/* sf_c_isnan.c -- float version of s_c_isnan.c. */ /* * ==================================================== * 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; * * isnanf is an extension declared in <ieeefp.h> and <math.h>. */ #include "fdlibm.h" int _DEFUN (isnanf, (x), float x) { __int32_t ix; GET_FLOAT_WORD(ix,x); ix &= 0x7fffffff; return FLT_UWORD_IS_NAN(ix); } #ifdef _DOUBLE_IS_32BITS #undef isnan int _DEFUN (isnan, (x), double x) { return isnanf((float) x); } #endif /* defined(_DOUBLE_IS_32BITS) */