diff options
Diffstat (limited to 'sysdeps/powerpc/powerpc64/fpu/s_truncf.S')
| -rw-r--r-- | sysdeps/powerpc/powerpc64/fpu/s_truncf.S | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/sysdeps/powerpc/powerpc64/fpu/s_truncf.S b/sysdeps/powerpc/powerpc64/fpu/s_truncf.S index b38b722a6f..1456e7f434 100644 --- a/sysdeps/powerpc/powerpc64/fpu/s_truncf.S +++ b/sysdeps/powerpc/powerpc64/fpu/s_truncf.S @@ -1,5 +1,5 @@ /* truncf function. PowerPC64 version. - Copyright (C) 2004 Free Software Foundation, Inc. + Copyright (C) 2004, 2006 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 @@ -21,9 +21,7 @@ .section ".toc","aw" .LC0: /* 2**23 */ - .tc FD_41600000_0[TC],0x4160000000000000 -.LC2: /* -0.0 */ - .tc FD_80000000_0[TC],0x8000000000000000 + .tc FD_4b000000_0[TC],0x4b00000000000000 .section ".text" /* float [fp1] truncf (float x [fp1]) @@ -33,10 +31,10 @@ We set "round toward Zero" mode and trunc by adding +-2**23 then subtracting +-2**23. */ -ENTRY (__truncf) +EALIGN (__truncf, 4, 0) CALL_MCOUNT 0 mffs fp11 /* Save current FPU rounding mode. */ - lfd fp13,.LC0@toc(2) + lfs fp13,.LC0@toc(2) fabs fp0,fp1 fsubs fp12,fp13,fp13 /* generate 0.0 */ fcmpu cr7,fp0,fp13 /* if (fabs(x) > TWO23) */ @@ -46,17 +44,18 @@ ENTRY (__truncf) ble- cr6,.L4 fadds fp1,fp1,fp13 /* x+= TWO23; */ fsubs fp1,fp1,fp13 /* x-= TWO23; */ -.L9: - mtfsf 0x01,fp11 /* restore previous truncing mode. */ + fabs fp1,fp1 /* if (x == 0.0) */ + /* x = 0.0; */ + mtfsf 0x01,fp11 /* restore previous rounding mode. */ blr .L4: bge- cr6,.L9 /* if (x < 0.0) */ fsubs fp1,fp1,fp13 /* x-= TWO23; */ fadds fp1,fp1,fp13 /* x+= TWO23; */ - fcmpu cr5,fp1,fp12 /* if (x > 0.0) */ + fnabs fp1,fp1 /* if (x == 0.0) */ + /* x = -0.0; */ +.L9: mtfsf 0x01,fp11 /* restore previous rounding mode. */ - bnelr+ cr5 - lfd fp1,.LC2@toc(2) /* x must be -0.0 for the 0.0 case. */ blr END (__truncf) |