xref: /reactos/sdk/lib/crt/math/i386/exp_asm.s (revision 3f976713) 
1
2#include <asm.inc>
3
4PUBLIC _exp
5
6/* FUNCTIONS ***************************************************************/
7.code
8
9_exp:
10    push ebp
11    mov ebp, esp
12
13    fld qword ptr [ebp + 8]
14    fxam
15    fstsw ax
16    fwait
17    sahf
18    jnp .not_inf
19    jnc .not_inf
20    test ah, 2
21    jz .done
22    fstp st
23    fldz
24    jmp .done
25.not_inf:
26    fldl2e
27    fmul st, st(1)
28    fst st(1)
29    frndint
30    fxch st(1)
31    fsub st, st(1)
32    f2xm1
33    fld1
34    faddp st(1), st
35    fscale
36    fstp st(1)
37.done:
38    pop ebp
39    ret
40
41END
42