diff options
Diffstat (limited to 'sysdeps/i386/fpu/s_ceill.S')
| -rw-r--r-- | sysdeps/i386/fpu/s_ceill.S | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/sysdeps/i386/fpu/s_ceill.S b/sysdeps/i386/fpu/s_ceill.S index 4b272c522a..7c08f43b24 100644 --- a/sysdeps/i386/fpu/s_ceill.S +++ b/sysdeps/i386/fpu/s_ceill.S @@ -10,10 +10,10 @@ RCSID("$NetBSD: $") ENTRY(__ceill) fldt 4(%esp) - subl $8,%esp - cfi_adjust_cfa_offset (8) + subl $32,%esp + cfi_adjust_cfa_offset (32) - fstcw 4(%esp) /* store fpu control word */ + fnstenv 4(%esp) /* store fpu environment */ /* We use here %edx although only the low 1 bits are defined. But none of the operations should care and they are faster @@ -26,10 +26,15 @@ ENTRY(__ceill) frndint /* round */ - fldcw 4(%esp) /* restore original control word */ + /* Preserve "invalid" exceptions from sNaN input. */ + fnstsw + andl $0x1, %eax + orl %eax, 8(%esp) - addl $8,%esp - cfi_adjust_cfa_offset (-8) + fldenv 4(%esp) /* restore original environment */ + + addl $32,%esp + cfi_adjust_cfa_offset (-32) ret END (__ceill) weak_alias (__ceill, ceill) |