math: move x86_64 exp2l implementation to exp2l.s from expl.s

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

diff --git a/src/math/x86_64/expl.s b/src/math/x86_64/expl.s
index 740bc77..e69de29 100644 (file)
--- a/src/math/x86_64/expl.s
+++ b/src/math/x86_64/expl.s
@@ -1,83 +0,0 @@
-.global expm1l
-.type expm1l,@function
-expm1l:
-       fldt 8(%rsp)
-1:     fldl2e
-       fmulp
-       fld1
-       fld %st(1)
-       fabs
-       fucom %st(1)
-       fnstsw %ax
-       fstp %st(0)
-       fstp %st(0)
-       sahf
-       ja 1f
-       f2xm1
-       ret
-1:     push %rax
-       call 1f
-       pop %rax
-       fld1
-       fsubrp
-       ret
-
-.global expl
-.type expl,@function
-expl:
-       fldt 8(%rsp)
-       fldl2e
-       fmulp
-       jmp 1f
-
-.global exp2l
-.type exp2l,@function
-exp2l:
-       fldt 8(%rsp)
-1:     mov $0x467ff000,%eax
-       mov %eax,-16(%rsp)
-       mov $0x80000000,%eax
-       mov %eax,-20(%rsp)
-       xor %eax,%eax
-       mov %eax,-24(%rsp)
-       flds -16(%rsp)    # 16380
-       fld %st(1)
-       fabs
-       fucom %st(1)
-       fnstsw
-       fstp %st(0)
-       fstp %st(0)
-       sahf
-       ja 3f             # |x| > 16380
-       jp 2f             # x is nan (avoid invalid except in fistp)
-       fld %st(0)
-       fistpl -16(%rsp)
-       fildl -16(%rsp)
-       fxch %st(1)
-       fsub %st(1)
-       mov $0x3fff,%eax
-       add %eax,-16(%rsp)
-       f2xm1
-       fld1
-       faddp             # 2^(x-rint(x))
-       fldt -24(%rsp)    # 2^rint(x)
-       fmulp
-2:     fstp %st(1)
-       ret
-
-3:     fld %st(0)
-       fstpt -24(%rsp)
-       fld1
-       mov -15(%rsp),%ax
-       and $0x7fff,%ax
-       cmp $0x7fff,%ax
-       je 1f             # x = +-inf
-       fld %st(1)
-       frndint
-       fxch %st(2)
-       fsub %st(2)       # st(0)=x-rint(x), st(1)=1, st(2)=rint(x)
-       f2xm1
-       faddp             # 2^(x-rint(x))
-1:     fscale
-       fstp %st(1)
-       ret