1 /* Floor function. PowerPC32 version.
2 Copyright (C) 2004-2015 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>
22 .section .rodata.cst4,"aM",@progbits,4
29 mffs fp11 /* Save current FPU rounding mode. */
33 SETUP_GOT_ACCESS(r9,got_label)
34 addis r9,r9,.LC0-got_label@ha
35 lfs fp13,.LC0-got_label@l(r9)
43 fsub fp12,fp13,fp13 /* generate 0.0 */
44 fcmpu cr7,fp0,fp13 /* if (fabs(x) > TWO52) */
45 fcmpu cr6,fp1,fp12 /* if (x > 0.0) */
47 mtfsfi 7,3 /* Set rounding mode toward -inf. */
49 fadd fp1,fp1,fp13 /* x+= TWO52; */
50 fsub fp1,fp1,fp13 /* x-= TWO52; */
51 fabs fp1,fp1 /* if (x == 0.0) */
53 mtfsf 0x01,fp11 /* restore previous rounding mode. */
56 bge- cr6,.L9 /* if (x < 0.0) */
57 fsub fp1,fp1,fp13 /* x-= TWO52; */
58 fadd fp1,fp1,fp13 /* x+= TWO52; */
59 fnabs fp1,fp1 /* if (x == 0.0) */
62 mtfsf 0x01,fp11 /* restore previous rounding mode. */
66 weak_alias (__floor, floor)
69 weak_alias (__floor, floorl)
70 strong_alias (__floor, __floorl)
72 #if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)
73 compat_symbol (libm, __floor, floorl, GLIBC_2_0)