| 0,0 → 1,64 |
|---|
| /* |
| * ==================================================== |
| * 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 */ |