diff options
Diffstat (limited to 'sysdeps/powerpc/powerpc64/fpu/s_floorf.S')
| -rw-r--r-- | sysdeps/powerpc/powerpc64/fpu/s_floorf.S | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/sysdeps/powerpc/powerpc64/fpu/s_floorf.S b/sysdeps/powerpc/powerpc64/fpu/s_floorf.S new file mode 100644 index 0000000000..cde92b9174 --- /dev/null +++ b/sysdeps/powerpc/powerpc64/fpu/s_floorf.S @@ -0,0 +1,54 @@ +/* float Floor function. PowerPC64 version. + Copyright (C) 2004 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <sysdep.h> + + .section ".toc","aw" +.LC0: /* 2**23 */ + .tc FD_41600000_0[TC],0x4160000000000000 + .section ".text" + +ENTRY (__floorf) + mffs fp11 /* Save current FPU rounding mode. */ + lfd fp13,.LC0@toc(2) + fabs fp0,fp1 + fsubs fp12,fp13,fp13 /* generate 0.0 */ + fcmpu cr7,fp0,fp13 /* if (fabs(x) > TWO23) */ + fcmpu cr6,fp1,fp12 /* if (x > 0.0) */ + bnllr- cr7 + mtfsfi 7,3 /* Set rounding mode toward -inf. */ + ble- cr6,.L4 + fadds fp1,fp1,fp13 /* x+= TWO23; */ + fsubs fp1,fp1,fp13 /* x-= TWO23; */ + fcmpu cr5,fp1,fp12 /* if (x > 0.0) */ + mtfsf 0x01,fp11 /* restore previous rounding mode. */ + bnelr+ cr5 + fmr fp1,fp12 /* x must be +0.0 for the 0.0 case. */ + blr +.L4: + bge- cr6,.L9 /* if (x < 0.0) */ + fsubs fp1,fp1,fp13 /* x-= TWO23; */ + fadds fp1,fp1,fp13 /* x+= TWO23; */ +.L9: + mtfsf 0x01,fp11 /* restore previous rounding mode. */ + blr + END (__floorf) + +weak_alias (__floorf, floorf) + |