x86_64 math asm, long double functions only

[musl] / src / math / x86_64 / floorl.s

.global floorl
.type floorl,@function
floorl:
        fldt 8(%rsp)
1:      mov $0x7,%al
1:      fstcw 8(%rsp)
        mov 9(%rsp),%ah
        mov %al,9(%rsp)
        fldcw 8(%rsp)
        frndint
        mov %ah,9(%rsp)
        fldcw 8(%rsp)
        ret

.global ceill
.type ceill,@function
ceill:
        fldt 8(%rsp)
        mov $0xb,%al
        jmp 1b

.global truncl
.type truncl,@function
truncl:
        fldt 8(%rsp)
        mov $0xf,%al
        jmp 1b