aboutsummaryrefslogtreecommitdiff
path: root/sys/vops/lz/apolr.x
diff options
context:
space:
mode:
authorJoseph Hunkeler <jhunkeler@gmail.com>2015-07-08 20:46:52 -0400
committerJoseph Hunkeler <jhunkeler@gmail.com>2015-07-08 20:46:52 -0400
commitfa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 (patch)
treebdda434976bc09c864f2e4fa6f16ba1952b1e555 /sys/vops/lz/apolr.x
downloadiraf-linux-fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4.tar.gz
Initial commit
Diffstat (limited to 'sys/vops/lz/apolr.x')
-rw-r--r--sys/vops/lz/apolr.x25
1 files changed, 25 insertions, 0 deletions
diff --git a/sys/vops/lz/apolr.x b/sys/vops/lz/apolr.x
new file mode 100644
index 00000000..22912021
--- /dev/null
+++ b/sys/vops/lz/apolr.x
@@ -0,0 +1,25 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# APOL -- Evaluate a polynomial at X, given the coefficients of the polynomial
+# in COEFF and returning the computed value as the function value.
+
+real procedure apolr (x, coeff, ncoeff)
+
+real x # point at which the polynomial is to be evaluated
+real coeff[ncoeff] # coefficients of the polynomial, lower orders first
+int ncoeff
+
+int i
+real pow, sum
+
+begin
+ sum = coeff[1]
+ pow = x
+
+ do i = 2, ncoeff {
+ sum = sum + pow * coeff[i]
+ pow = pow * x
+ }
+
+ return (sum)
+end