From 0b44a0315b47dd8eced9f3b7f31580cf14bbfc01 Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Sat, 12 Feb 2011 00:22:29 -0500
Subject: initial check-in, version 0.5.0

---
 src/math/i386/e_exp.s | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 src/math/i386/e_exp.s

(limited to 'src/math/i386/e_exp.s')

diff --git a/src/math/i386/e_exp.s b/src/math/i386/e_exp.s
new file mode 100644
index 00000000..d6c54a30
--- /dev/null
+++ b/src/math/i386/e_exp.s
@@ -0,0 +1,36 @@
+.global expf
+expf:
+	mov 4(%esp),%eax
+	flds 4(%esp)
+	shr $23,%eax
+	inc %al
+	jz 1f
+	jmp 0f
+
+.global exp
+exp:
+	mov 8(%esp),%eax
+	fldl 4(%esp)
+	shl %eax
+	cmp $0xffe00000,%eax
+	jae 1f
+
+0:	fldl2e
+	fmulp
+	fst %st(1)
+	frndint
+	fst %st(2)
+	fsubrp
+	f2xm1
+	fld1
+	faddp
+	fscale
+	fstp %st(1)
+	ret
+
+1:	fsts 4(%esp)
+	cmpl $0xff800000,4(%esp)
+	jnz 1f
+	fstp %st(0)
+	fldz
+1:	ret
-- 
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