From 55253e4e15b093a0826fc10b376f7724cea2ba7e Mon Sep 17 00:00:00 2001
From: Franz Zotter <fzotter@users.sourceforge.net>
Date: Mon, 12 Jan 2009 17:09:13 +0000
Subject: added [mtx_sh] for spherical harmonics evaluation.

svn path=/trunk/externals/iem/iemmatrix/; revision=10515
---
 src/mtx_sh/cmdline/sharmonics_cmd.c | 57 +++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 src/mtx_sh/cmdline/sharmonics_cmd.c

(limited to 'src/mtx_sh/cmdline/sharmonics_cmd.c')

diff --git a/src/mtx_sh/cmdline/sharmonics_cmd.c b/src/mtx_sh/cmdline/sharmonics_cmd.c
new file mode 100644
index 0000000..5b2f22a
--- /dev/null
+++ b/src/mtx_sh/cmdline/sharmonics_cmd.c
@@ -0,0 +1,57 @@
+
+/* command line test for chebyshev12.c 
+ * Franz Zotter, 2009, see ../LICENSE.txt */
+
+#include <stdio.h>
+
+#include "sharmonics.h"
+
+int main (int argc, char *argv[]) {
+   int nmax, l, lc, n, m;
+   SHWorkSpace *ws=0;
+   double *ptr,*phi,*theta;
+
+   if (argc <4) {
+      printf("sharmonics requires nmax as input argument followed by phi theta value pairs\n");
+      return 0;
+   }
+
+   nmax=atoi(argv[1]);
+   l=(argc-2)/2;
+   if ((phi=(double*)calloc(l,sizeof(double)))==0) {
+      printf("sharmonics could not allocate memory for %d phi-values\n",l);
+      return 0;
+   }
+   if ((theta=(double*)calloc(l,sizeof(double)))==0) {
+      printf("sharmonics could not allocate memory for %d theta-values\n",l);
+      free(phi);
+      return 0;
+   }
+   if ((ws=sharmonics_alloc(nmax,l))==0) {
+      printf("sharmonics could not allocate memory for n=%d\n and l=%d\n",nmax,l);
+      free(theta);
+      free(phi);
+      return 0;
+   }
+   for (n=0;n<l;n++) {
+      phi[n]=atof(argv[2*n+2]);
+      theta[n]=atof(argv[2*n+3]);
+   }
+   sharmonics(phi,theta,ws);
+
+   ptr=ws->y;
+   for (lc=0;lc<l;lc++) {
+      printf("pt %d:\n",lc);
+      for (n=0;n<=nmax;n++) {
+         for (m=-n;m<=n;m++) {
+            printf("Y[%2d][%2d](%7.4f,%7.4f)=%7.4f\n",n,m,phi[lc],theta[lc],*ptr++);
+         }
+      }
+   }
+   sharmonics_free(ws);
+   free(phi);
+   free(theta);
+   return 1;
+}
+
+
-- 
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