1 /* Floor function. PowerPC64 version.
2 Copyright (C) 2004-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
20 #include <math_ldbl_opt.h>
21 #include <libm-alias-double.h>
25 .tc FD_43300000_0[TC],0x4330000000000000
32 fsub fp12,fp13,fp13 /* generate 0.0 */
33 fcmpu cr7,fp0,fp13 /* if (fabs(x) > TWO52) */
34 mffs fp11 /* Save current FPU rounding mode and
36 fcmpu cr6,fp1,fp12 /* if (x > 0.0) */
38 mtfsfi 7,3 /* Set rounding mode toward -inf. */
40 fadd fp1,fp1,fp13 /* x+= TWO52; */
41 fsub fp1,fp1,fp13 /* x-= TWO52; */
42 fabs fp1,fp1 /* if (x == 0.0) */
44 mtfsf 0xff,fp11 /* Restore previous rounding mode and
48 bge- cr6,.L9 /* if (x < 0.0) */
49 fsub fp1,fp1,fp13 /* x-= TWO52; */
50 fadd fp1,fp1,fp13 /* x+= TWO52; */
51 fnabs fp1,fp1 /* if (x == 0.0) */
54 mtfsf 0xff,fp11 /* Restore previous rounding mode and
58 /* Ensure sNaN input is converted to qNaN. */
65 libm_alias_double (__floor, floor)