diff options
Diffstat (limited to 'REORG.TODO/sysdeps/powerpc/powerpc32/fpu/s_nearbyintf.S')
| -rw-r--r-- | REORG.TODO/sysdeps/powerpc/powerpc32/fpu/s_nearbyintf.S | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/powerpc/powerpc32/fpu/s_nearbyintf.S b/REORG.TODO/sysdeps/powerpc/powerpc32/fpu/s_nearbyintf.S new file mode 100644 index 0000000000..fb4c6e4cee --- /dev/null +++ b/REORG.TODO/sysdeps/powerpc/powerpc32/fpu/s_nearbyintf.S @@ -0,0 +1,78 @@ +/* Round to int floating-point values. PowerPC32 version. + Copyright (C) 2011-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Adhemerval Zanella <azanella@br.ibm.com>, 2011 + + 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> + + +/* float [fp1] nearbyintf(float [fp1] x) */ + + .section .rodata.cst4,"aM",@progbits,4 + .align 2 +.LC0: + .long 0x4B000000 /* TWO23: 2**23 */ + + .section ".text" +ENTRY (__nearbyintf) +#ifdef SHARED + mflr r11 + cfi_register(lr,r11) + bcl 20,31,1f +1: mflr r9 + addis r9,r9,.LC0-1b@ha + lfs fp13,.LC0-1b@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) > TWO23 */ + bge cr7,.L10 + fcmpu cr7,fp1,fp12 /* if (x > 0.0 */ + ble cr7,L(lessthanzero) + mffs fp11 + mtfsb0 4*cr7+lt /* Disable FE_INEXACT exception */ + fadds fp1,fp1,fp13 /* x += TWO23 */ + fsubs fp1,fp1,fp13 /* x -= TWO23 */ + fabs fp1,fp1 /* if (x == 0.0) */ + mtfsf 0xff,fp11 /* Restore FE_INEXACT state. */ + blr +L(lessthanzero): + bgelr cr7 + mffs fp11 + mtfsb0 4*cr7+lt /* Disable FE_INEXACT exception */ + fsubs fp1,fp1,fp13 /* x -= TWO23 */ + fadds fp1,fp1,fp13 /* x += TWO23 */ + fnabs fp1,fp1 /* if (x == 0.0) */ + mtfsf 0xff,fp11 /* Restore FE_INEXACT state. */ + blr +.L10: + /* Ensure sNaN input is converted to qNaN. */ + fcmpu cr7,fp1,fp1 + beqlr cr7 + fadds fp1,fp1,fp1 + blr +END (__nearbyintf) + +weak_alias (__nearbyintf, nearbyintf) |