From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001
From: Vladimir Azarov <avm@intermediate-node.net>
Date: Tue, 1 Oct 2024 15:47:05 +0200
Subject: Initial version

---
 src/math/i386/atan.s | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 src/math/i386/atan.s

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

diff --git a/src/math/i386/atan.s b/src/math/i386/atan.s
new file mode 100644
index 0000000..2c57f6b
--- /dev/null
+++ b/src/math/i386/atan.s
@@ -0,0 +1,16 @@
+.global atan
+.type atan,@function
+atan:
+	fldl 4(%esp)
+	mov 8(%esp),%eax
+	add %eax,%eax
+	cmp $0x00200000,%eax
+	jb 1f
+	fld1
+	fpatan
+	fstpl 4(%esp)
+	fldl 4(%esp)
+	ret
+		# subnormal x, return x with underflow
+1:	fsts 4(%esp)
+	ret
-- 
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