diff options
Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm/s_roundl.c')
-rw-r--r-- | sysdeps/ieee754/ldbl-128ibm/s_roundl.c | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_roundl.c b/sysdeps/ieee754/ldbl-128ibm/s_roundl.c deleted file mode 100644 index 0b70e24637..0000000000 --- a/sysdeps/ieee754/ldbl-128ibm/s_roundl.c +++ /dev/null @@ -1,87 +0,0 @@ -/* Round to int long double floating-point values. - IBM extended format long double version. - Copyright (C) 2006-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -/* This has been coded in assembler because GCC makes such a mess of it - when it's coded in C. */ - -#include <math.h> -#include <math_ldbl_opt.h> -#include <float.h> -#include <ieee754.h> - - -long double -__roundl (long double x) -{ - double xh, xl, hi, lo; - - ldbl_unpack (x, &xh, &xl); - - /* Return Inf, Nan, +/-0 unchanged. */ - if (__builtin_expect (xh != 0.0 - && __builtin_isless (__builtin_fabs (xh), - __builtin_inf ()), 1)) - { - hi = __round (xh); - if (hi != xh) - { - /* The high part is not an integer; the low part only - affects the result if the high part is exactly half way - between two integers and the low part is nonzero with the - opposite sign. */ - if (fabs (hi - xh) == 0.5) - { - if (xh > 0 && xl < 0) - xh = hi - 1; - else if (xh < 0 && xl > 0) - xh = hi + 1; - else - xh = hi; - } - else - xh = hi; - xl = 0; - } - else - { - /* The high part is a nonzero integer. */ - lo = __round (xl); - if (fabs (lo - xl) == 0.5) - { - if (xh > 0 && xl < 0) - xl = lo + 1; - else if (xh < 0 && lo > 0) - xl = lo - 1; - else - xl = lo; - } - else - xl = lo; - xh = hi; - ldbl_canonicalize_int (&xh, &xl); - } - } - else - /* Quiet signaling NaN arguments. */ - xh += xh; - - return ldbl_pack (xh, xl); -} - -long_double_symbol (libm, __roundl, roundl); |