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

---
 math/surfit/iszero.x | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 math/surfit/iszero.x

(limited to 'math/surfit/iszero.x')

diff --git a/math/surfit/iszero.x b/math/surfit/iszero.x
new file mode 100644
index 00000000..d453d1fd
--- /dev/null
+++ b/math/surfit/iszero.x
@@ -0,0 +1,26 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include "surfitdef.h"
+
+# ISZERO -- Procedure to zero the accumulators for line number lineno.
+
+procedure iszero (sf)
+
+pointer	sf	# pointer to the surface descriptor
+
+begin
+	SF_NXPTS(sf) = 0
+	SF_NYPTS(sf) = 0
+
+	call aclrr (XMATRIX(SF_XMATRIX(sf)),
+		     SF_XORDER(sf) * SF_NXCOEFF(sf))
+	call aclrr (YMATRIX(SF_YMATRIX(sf)),
+		    SF_YORDER(sf) * SF_NYCOEFF(sf))
+	call aclrr (XCOEFF(SF_XCOEFF(sf)), SF_NXCOEFF(sf) * SF_NLINES(sf))
+	call aclrr (COEFF(SF_COEFF(sf)), SF_NXCOEFF(sf) * SF_NYCOEFF(sf))
+
+	if (SF_WZ(sf) != NULL)
+	    call mfree (SF_WZ(sf), MEM_TYPE)
+	if (SF_TLEFT(sf) != NULL)
+	    call mfree (SF_TLEFT(sf), TY_INT)
+end
-- 
cgit