diff options
Diffstat (limited to 'sysdeps/ieee754/ldbl-128/s_totalordermagl.c')
| -rw-r--r-- | sysdeps/ieee754/ldbl-128/s_totalordermagl.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/sysdeps/ieee754/ldbl-128/s_totalordermagl.c b/sysdeps/ieee754/ldbl-128/s_totalordermagl.c new file mode 100644 index 0000000000..642c48e8f5 --- /dev/null +++ b/sysdeps/ieee754/ldbl-128/s_totalordermagl.c @@ -0,0 +1,50 @@ +/* Total order operation on absolute values. ldbl-128 version. + Copyright (C) 2016-2018 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/>. */ + +#include <math.h> +#include <math_private.h> +#include <libm-alias-ldouble.h> +#include <nan-high-order-bit.h> +#include <stdint.h> + +int +__totalordermagl (_Float128 x, _Float128 y) +{ + uint64_t hx, hy; + uint64_t lx, ly; + GET_LDOUBLE_WORDS64 (hx, lx, x); + GET_LDOUBLE_WORDS64 (hy, ly, y); + hx &= 0x7fffffffffffffffULL; + hy &= 0x7fffffffffffffffULL; +#if HIGH_ORDER_BIT_IS_SET_FOR_SNAN + /* For the preferred quiet NaN convention, this operation is a + comparison of the representations of the absolute values of the + arguments. If both arguments are NaNs, invert the + quiet/signaling bit so comparing that way works. */ + if ((hx > 0x7fff000000000000ULL || (hx == 0x7fff000000000000ULL + && lx != 0)) + && (hy > 0x7fff000000000000ULL || (hy == 0x7fff000000000000ULL + && ly != 0))) + { + hx ^= 0x0000800000000000ULL; + hy ^= 0x0000800000000000ULL; + } +#endif + return hx < hy || (hx == hy && lx <= ly); +} +libm_alias_ldouble (__totalordermag, totalordermag) |