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-rw-r--r--sysdeps/powerpc/powerpc64/fpu/s_trunc.S21
1 files changed, 12 insertions, 9 deletions
diff --git a/sysdeps/powerpc/powerpc64/fpu/s_trunc.S b/sysdeps/powerpc/powerpc64/fpu/s_trunc.S
index 3ddd298525..086ed0025e 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 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
@@ -18,12 +18,11 @@
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])
@@ -33,7 +32,7 @@
We set "round toward Zero" mode and trunc by adding +-2**52 then
subtracting +-2**52. */
-ENTRY (__trunc)
+EALIGN (__trunc, 4, 0)
CALL_MCOUNT 0
mffs fp11 /* Save current FPU rounding mode. */
lfd fp13,.LC0@toc(2)
@@ -46,17 +45,18 @@ ENTRY (__trunc)
ble- cr6,.L4
fadd fp1,fp1,fp13 /* x+= TWO52; */
fsub fp1,fp1,fp13 /* x-= TWO52; */
-.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) */
fsub fp1,fp1,fp13 /* x-= TWO52; */
fadd fp1,fp1,fp13 /* x+= TWO52; */
- 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 (__trunc)
@@ -66,3 +66,6 @@ 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