From 6f26cf3dacf9d426bbd18cecb4d486da56c17351 Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Sun, 18 Mar 2012 21:43:43 -0400
Subject: [PATCH] asm exponential functions for i386

---
 src/math/i386/exp.s    | 46 ++++++++++++++++++++++++++++++++++++++++++
 src/math/i386/exp2.s   |  1 +
 src/math/i386/exp2f.s  |  1 +
 src/math/i386/exp2l.s  |  1 +
 src/math/i386/expf.s   |  1 +
 src/math/i386/expl.s   |  1 +
 src/math/i386/expm1.s  | 36 +++++++++++++++++++++++++++++++++
 src/math/i386/expm1f.s |  1 +
 src/math/i386/expm1l.s |  1 +
 9 files changed, 89 insertions(+)
 create mode 100644 src/math/i386/exp.s
 create mode 100644 src/math/i386/exp2.s
 create mode 100644 src/math/i386/exp2f.s
 create mode 100644 src/math/i386/exp2l.s
 create mode 100644 src/math/i386/expf.s
 create mode 100644 src/math/i386/expl.s
 create mode 100644 src/math/i386/expm1.s
 create mode 100644 src/math/i386/expm1f.s
 create mode 100644 src/math/i386/expm1l.s

diff --git a/src/math/i386/exp.s b/src/math/i386/exp.s
new file mode 100644
index 00000000..18f6cd67
--- /dev/null
+++ b/src/math/i386/exp.s
@@ -0,0 +1,46 @@
+.global exp2f
+.type exp2f,@function
+exp2f:
+	flds 4(%esp)
+	jmp 1f
+
+.global exp2l
+.type exp2l,@function
+exp2l:
+	fldt 4(%esp)
+	jmp 1f
+
+.global expf
+.type expf,@function
+expf:
+	flds 4(%esp)
+	jmp 2f
+
+.global expl
+.type expl,@function
+expl:
+	fldt 4(%esp)
+	jmp 2f
+
+.global exp
+.type exp,@function
+exp:
+	fldl 4(%esp)
+2:	fldl2e
+	fmulp
+	jmp 1f
+
+.global exp2
+.type exp2,@function
+exp2:
+	fldl 4(%esp)
+1:	fld %st(0)
+	frndint
+	fxch %st(1)
+	fsub %st(1)
+	f2xm1
+	fld1
+	faddp
+	fscale
+	fstp %st(1)
+	ret
diff --git a/src/math/i386/exp2.s b/src/math/i386/exp2.s
new file mode 100644
index 00000000..f335a3e5
--- /dev/null
+++ b/src/math/i386/exp2.s
@@ -0,0 +1 @@
+# see exp.s
diff --git a/src/math/i386/exp2f.s b/src/math/i386/exp2f.s
new file mode 100644
index 00000000..f335a3e5
--- /dev/null
+++ b/src/math/i386/exp2f.s
@@ -0,0 +1 @@
+# see exp.s
diff --git a/src/math/i386/exp2l.s b/src/math/i386/exp2l.s
new file mode 100644
index 00000000..f335a3e5
--- /dev/null
+++ b/src/math/i386/exp2l.s
@@ -0,0 +1 @@
+# see exp.s
diff --git a/src/math/i386/expf.s b/src/math/i386/expf.s
new file mode 100644
index 00000000..f335a3e5
--- /dev/null
+++ b/src/math/i386/expf.s
@@ -0,0 +1 @@
+# see exp.s
diff --git a/src/math/i386/expl.s b/src/math/i386/expl.s
new file mode 100644
index 00000000..f335a3e5
--- /dev/null
+++ b/src/math/i386/expl.s
@@ -0,0 +1 @@
+# see exp.s
diff --git a/src/math/i386/expm1.s b/src/math/i386/expm1.s
new file mode 100644
index 00000000..d6d511ef
--- /dev/null
+++ b/src/math/i386/expm1.s
@@ -0,0 +1,36 @@
+.global expm1f
+.type expm1f,@function
+expm1f:
+	flds 4(%esp)
+	jmp 1f
+
+.global expm1l
+.type expm1l,@function
+expm1l:
+	fldt 4(%esp)
+	jmp 1f
+
+.global expm1
+.type expm1,@function
+expm1:
+	fldl 4(%esp)
+1:	fldl2e
+	fmulp
+	fld %st(0)
+	frndint
+	fldz
+	fcompi
+	jnz 1f
+	fstp %st(0)
+	f2xm1
+	ret
+1:	fxch %st(1)
+	fsub %st(1)
+	f2xm1
+	fld1
+	faddp
+	fscale
+	fld1
+	fsubrp
+	fstp %st(1)
+	ret
diff --git a/src/math/i386/expm1f.s b/src/math/i386/expm1f.s
new file mode 100644
index 00000000..89c2d290
--- /dev/null
+++ b/src/math/i386/expm1f.s
@@ -0,0 +1 @@
+# see expm1.s
diff --git a/src/math/i386/expm1l.s b/src/math/i386/expm1l.s
new file mode 100644
index 00000000..89c2d290
--- /dev/null
+++ b/src/math/i386/expm1l.s
@@ -0,0 +1 @@
+# see expm1.s
-- 
2.25.1