diff options
Diffstat (limited to 'sysdeps/powerpc/powerpc64/fpu/s_trunc.S')
| -rw-r--r-- | sysdeps/powerpc/powerpc64/fpu/s_trunc.S | 21 |
1 files changed, 9 insertions, 12 deletions
diff --git a/sysdeps/powerpc/powerpc64/fpu/s_trunc.S b/sysdeps/powerpc/powerpc64/fpu/s_trunc.S index 086ed0025e..3ddd298525 100644 --- a/sysdeps/powerpc/powerpc64/fpu/s_trunc.S +++ b/sysdeps/powerpc/powerpc64/fpu/s_trunc.S @@ -1,5 +1,5 @@ /* trunc function. PowerPC64 version. - Copyright (C) 2004, 2006 Free Software Foundation, Inc. + 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 @@ -18,11 +18,12 @@ 02111-1307 USA. */ #include <sysdep.h> -#include <math_ldbl_opt.h> .section ".toc","aw" .LC0: /* 2**52 */ .tc FD_43300000_0[TC],0x4330000000000000 +.LC2: /* -0.0 */ + .tc FD_80000000_0[TC],0x8000000000000000 .section ".text" /* double [fp1] trunc (double x [fp1]) @@ -32,7 +33,7 @@ We set "round toward Zero" mode and trunc by adding +-2**52 then subtracting +-2**52. */ -EALIGN (__trunc, 4, 0) +ENTRY (__trunc) CALL_MCOUNT 0 mffs fp11 /* Save current FPU rounding mode. */ lfd fp13,.LC0@toc(2) @@ -45,18 +46,17 @@ EALIGN (__trunc, 4, 0) ble- cr6,.L4 fadd fp1,fp1,fp13 /* x+= TWO52; */ fsub fp1,fp1,fp13 /* x-= TWO52; */ - fabs fp1,fp1 /* if (x == 0.0) */ - /* x = 0.0; */ - mtfsf 0x01,fp11 /* restore previous rounding mode. */ +.L9: + mtfsf 0x01,fp11 /* restore previous truncing mode. */ blr .L4: bge- cr6,.L9 /* if (x < 0.0) */ fsub fp1,fp1,fp13 /* x-= TWO52; */ fadd fp1,fp1,fp13 /* x+= TWO52; */ - fnabs fp1,fp1 /* if (x == 0.0) */ - /* x = -0.0; */ -.L9: + fcmpu cr5,fp1,fp12 /* if (x > 0.0) */ 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 (__trunc) @@ -66,6 +66,3 @@ weak_alias (__trunc, trunc) weak_alias (__trunc, truncl) strong_alias (__trunc, __truncl) #endif -#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1) -compat_symbol (libm, __trunc, truncl, GLIBC_2_1) -#endif |