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[/] [openrisc/] [trunk/] [gnu-stable/] [newlib-1.18.0/] [newlib/] [libm/] [common/] [s_nearbyint.c] - Rev 207
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/* * ==================================================== * 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. * ==================================================== */ /* FUNCTION <<nearbyint>>, <<nearbyintf>>--round to integer INDEX nearbyint INDEX nearbyintf ANSI_SYNOPSIS #include <math.h> double nearbyint(double <[x]>); float nearbyintf(float <[x]>); DESCRIPTION The <<nearbyint>> functions round their argument to an integer value in floating-point format, using the current rounding direction and (supposedly) without raising the "inexact" floating-point exception. See the <<rint>> functions for the same function with the "inexact" floating-point exception being raised when appropriate. BUGS Newlib does not support the floating-point exception model, so that the floating-point exception control is not present and thereby what may be seen will be compiler and hardware dependent in this regard. The Newlib <<nearbyint>> functions are identical to the <<rint>> functions with respect to the floating-point exception behavior, and will cause the "inexact" exception to be raised for most targets. RETURNS <[x]> rounded to an integral value, using the current rounding direction. PORTABILITY ANSI C, POSIX SEEALSO <<rint>>, <<round>> */ #include <math.h> #include "fdlibm.h" #ifndef _DOUBLE_IS_32BITS #ifdef __STDC__ double nearbyint(double x) #else double nearbyint(x) double x; #endif { return rint(x); } #endif /* _DOUBLE_IS_32BITS */
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