diff options
Diffstat (limited to 'REORG.TODO/sysdeps/powerpc/powerpc32/fpu/s_rint.S')
-rw-r--r-- | REORG.TODO/sysdeps/powerpc/powerpc32/fpu/s_rint.S | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/powerpc/powerpc32/fpu/s_rint.S b/REORG.TODO/sysdeps/powerpc/powerpc32/fpu/s_rint.S new file mode 100644 index 0000000000..a1c3116447 --- /dev/null +++ b/REORG.TODO/sysdeps/powerpc/powerpc32/fpu/s_rint.S @@ -0,0 +1,76 @@ +/* Round to int floating-point values. PowerPC32 version. + Copyright (C) 2004-2017 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 <sysdep.h> +#include <math_ldbl_opt.h> + + .section .rodata.cst4,"aM",@progbits,4 + .align 2 +.LC0: /* 2**52 */ + .long 0x59800000 + + .section ".text" +ENTRY (__rint) +#ifdef SHARED + mflr r11 + cfi_register(lr,r11) + SETUP_GOT_ACCESS(r9,got_label) + addis r9,r9,.LC0-got_label@ha + lfs fp13,.LC0-got_label@l(r9) + mtlr r11 + cfi_same_value (lr) +#else + lis r9,.LC0@ha + lfs fp13,.LC0@l(r9) +#endif + fabs fp0,fp1 + fsub fp12,fp13,fp13 /* generate 0.0 */ + fcmpu cr7,fp0,fp13 /* if (fabs(x) > TWO52) */ + fcmpu cr6,fp1,fp12 /* if (x > 0.0) */ + bnl cr7,.L10 + bng cr6,.L4 + fadd fp1,fp1,fp13 /* x+= TWO52; */ + fsub fp1,fp1,fp13 /* x-= TWO52; */ + fabs fp1,fp1 /* if (x == 0.0) */ + blr /* x = 0.0; */ +.L4: + bnllr cr6 /* if (x < 0.0) */ + fsub fp1,fp1,fp13 /* x-= TWO52; */ + fadd fp1,fp1,fp13 /* x+= TWO52; */ + fnabs fp1,fp1 /* if (x == 0.0) */ + blr /* x = -0.0; */ +.L10: + /* Ensure sNaN input is converted to qNaN. */ + fcmpu cr7,fp1,fp1 + beqlr cr7 + fadd fp1,fp1,fp1 + blr + END (__rint) + +weak_alias (__rint, rint) + +#ifdef NO_LONG_DOUBLE +weak_alias (__rint, rintl) +strong_alias (__rint, __rintl) +#endif +#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0) +compat_symbol (libm, __rint, rintl, GLIBC_2_0) +#endif |