about summary refs log tree commit diff
path: root/sysdeps/i386/fpu/e_asinl.S
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/i386/fpu/e_asinl.S')
-rw-r--r--sysdeps/i386/fpu/e_asinl.S22
1 files changed, 22 insertions, 0 deletions
diff --git a/sysdeps/i386/fpu/e_asinl.S b/sysdeps/i386/fpu/e_asinl.S
new file mode 100644
index 0000000000..3919fbcf58
--- /dev/null
+++ b/sysdeps/i386/fpu/e_asinl.S
@@ -0,0 +1,22 @@
+/*
+ * Written by J.T. Conklin <jtc@netbsd.org>.
+ * Public domain.
+ *
+ * Adapted for `long double' by Ulrich Drepper <drepper@cygnus.com>.
+ */
+
+#include <machine/asm.h>
+
+RCSID("$NetBSD: $")
+
+/* asinl = atanl (x / sqrtl(1 - x^2)) */
+ENTRY(__ieee754_asinl)
+	fldt	4(%esp)			/* x */
+	fld	%st
+	fmul	%st(0)			/* x^2 */
+	fld1
+	fsubp				/* 1 - x^2 */
+	fsqrt				/* sqrt (1 - x^2) */
+	fpatan
+	ret
+END (__ieee754_asinl)