[aandrejevic] 69998: [CRT] Check for positive and negative infinity in exp().

Author: aandrejevic
Date: Sun Nov 22 01:12:34 2015
New Revision: 69998

URL: http://svn.reactos.org/svn/reactos?rev=69998&view=rev
Log:
[CRT]
Check for positive and negative infinity in exp().

Modified:
    trunk/reactos/lib/sdk/crt/math/i386/exp_asm.s

Modified: trunk/reactos/lib/sdk/crt/math/i386/exp_asm.s
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/sdk/crt/math/i386/exp_a...
==============================================================================
--- trunk/reactos/lib/sdk/crt/math/i386/exp_asm.s	[iso-8859-1] (original)
+++ trunk/reactos/lib/sdk/crt/math/i386/exp_asm.s	[iso-8859-1] Sun Nov 22 01:12:34 2015
@@ -11,6 +11,18 @@
     mov ebp, esp

fld qword ptr [ebp + 8]
+    fxam
+    fstsw ax
+    fwait
+    sahf
+    jnp .not_inf
+    jnc .not_inf
+    test ah, 2
+    jz .done
+    fstp st
+    fldz
+    jmp .done
+.not_inf:
     fldl2e
     fmul st, st(1)
     fst st(1)
@@ -22,7 +34,7 @@
     faddp st(1), st
     fscale
     fstp st(1)
-
+.done:
     pop ebp
     ret