From 0b70a1e9a9651d21242c5b6da327ecab0f1a38a6 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Mon, 19 Mar 2012 05:42:04 -0400 Subject: asm for floor/ceil/trunc --- src/math/i386/floor.s | 67 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 src/math/i386/floor.s (limited to 'src/math/i386/floor.s') diff --git a/src/math/i386/floor.s b/src/math/i386/floor.s new file mode 100644 index 00000000..46ba88db --- /dev/null +++ b/src/math/i386/floor.s @@ -0,0 +1,67 @@ +.global floorf +.type floorf,@function +floorf: + flds 4(%esp) + jmp 1f + +.global floorl +.type floorl,@function +floorl: + fldt 4(%esp) + jmp 1f + +.global floor +.type floor,@function +floor: + fldl 4(%esp) +1: mov $0x7,%al +1: fstcw 4(%esp) + mov 5(%esp),%ah + mov %al,5(%esp) + fldcw 4(%esp) + frndint + mov %ah,5(%esp) + fldcw 4(%esp) + ret + +.global ceil +.type ceil,@function +ceil: + fldl 4(%esp) + mov $0xb,%al + jmp 1b + +.global ceilf +.type ceilf,@function +ceilf: + flds 4(%esp) + mov $0xb,%al + jmp 1b + +.global ceill +.type ceill,@function +ceill: + fldt 4(%esp) + mov $0xb,%al + jmp 1b + +.global trunc +.type trunc,@function +trunc: + fldl 4(%esp) + mov $0xf,%al + jmp 1b + +.global truncf +.type truncf,@function +truncf: + flds 4(%esp) + mov $0xf,%al + jmp 1b + +.global truncl +.type truncl,@function +truncl: + fldt 4(%esp) + mov $0xf,%al + jmp 1b -- cgit v1.2.1