diff options
Diffstat (limited to 'sysdeps/ieee754/dbl-64/s_rint.c')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/s_rint.c | 67 |
1 files changed, 0 insertions, 67 deletions
diff --git a/sysdeps/ieee754/dbl-64/s_rint.c b/sysdeps/ieee754/dbl-64/s_rint.c deleted file mode 100644 index a9c0d27842..0000000000 --- a/sysdeps/ieee754/dbl-64/s_rint.c +++ /dev/null @@ -1,67 +0,0 @@ -/* @(#)s_rint.c 5.1 93/09/24 */ -/* - * ==================================================== - * 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. - * ==================================================== - */ - -/* - * rint(x) - * Return x rounded to integral value according to the prevailing - * rounding mode. - * Method: - * Using floating addition. - * Exception: - * Inexact flag raised if x not equal to rint(x). - */ - -#include <math.h> -#include <math_private.h> - -static const double - TWO52[2] = { - 4.50359962737049600000e+15, /* 0x43300000, 0x00000000 */ - -4.50359962737049600000e+15, /* 0xC3300000, 0x00000000 */ -}; - -double -__rint (double x) -{ - int32_t i0, j0, sx; - double w, t; - GET_HIGH_WORD (i0, x); - sx = (i0 >> 31) & 1; - j0 = ((i0 >> 20) & 0x7ff) - 0x3ff; - if (j0 < 52) - { - if (j0 < 0) - { - w = TWO52[sx] + x; - t = w - TWO52[sx]; - GET_HIGH_WORD (i0, t); - SET_HIGH_WORD (t, (i0 & 0x7fffffff) | (sx << 31)); - return t; - } - } - else - { - if (j0 == 0x400) - return x + x; /* inf or NaN */ - else - return x; /* x is integral */ - } - w = TWO52[sx] + x; - return w - TWO52[sx]; -} -#ifndef __rint -weak_alias (__rint, rint) -# ifdef NO_LONG_DOUBLE -strong_alias (__rint, __rintl) -weak_alias (__rint, rintl) -# endif -#endif |