1 files changed, 26 insertions, 0 deletions
diff --git a/src/math/i386/log1pf.s b/src/math/i386/log1pf.s
new file mode 100644
index 0000000..9f13d95
--- /dev/null
+++ b/src/math/i386/log1pf.s
@@ -0,0 +1,26 @@
+.global log1pf
+.type log1pf,@function
+log1pf:
+	mov 4(%esp),%eax
+	fldln2
+	and $0x7fffffff,%eax
+	flds 4(%esp)
+	cmp $0x3e940000,%eax
+	ja 1f
+	cmp $0x00800000,%eax
+	jb 2f
+	fyl2xp1
+	fstps 4(%esp)
+	flds 4(%esp)
+	ret
+1:	fld1
+	faddp
+	fyl2x
+	fstps 4(%esp)
+	flds 4(%esp)
+	ret
+		# subnormal x, return x with underflow
+2:	fxch
+	fmul %st(1)
+	fstps 4(%esp)
+	ret