From fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 Mon Sep 17 00:00:00 2001
From: Joseph Hunkeler <jhunkeler@gmail.com>
Date: Wed, 8 Jul 2015 20:46:52 -0400
Subject: Initial commit

---
 sys/vops/lz/apowkl.x | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 sys/vops/lz/apowkl.x

(limited to 'sys/vops/lz/apowkl.x')

diff --git a/sys/vops/lz/apowkl.x b/sys/vops/lz/apowkl.x
new file mode 100644
index 00000000..c7247f3e
--- /dev/null
+++ b/sys/vops/lz/apowkl.x
@@ -0,0 +1,34 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APOWK -- Compute a ** b, where b is a constant of type INT (generic).
+
+procedure apowkl (a, b, c, npix)
+
+long	a[ARB], c[ARB]
+int	b
+int	npix, i
+
+begin
+	# Optimize the code for the various special cases.  We assume that the
+	# compiler is intelligent enough to recognize the special cases if the
+	# power is expressed as an integer constant.
+
+	switch (b) {
+	case 0:
+	    call amovkl (1, c, npix)
+	case 1:
+	    call amovl (a, c, npix)
+	case 2:
+	    do i = 1, npix
+		c[i] = a[i] ** 2
+	case 3:
+	    do i = 1, npix
+		c[i] = a[i] ** 3
+	case 4:
+	    do i = 1, npix
+		c[i] = a[i] ** 4
+	default:
+	    do i = 1, npix
+		c[i] = a[i] ** b
+	}
+end
-- 
cgit