From ca0d6cb8ef5e7ad9ada495fb38892e2d6562ec81 Mon Sep 17 00:00:00 2001
From: Franz Zotter <fzotter@users.sourceforge.net>
Date: Mon, 12 Jan 2009 19:14:05 +0000
Subject: corrected some misbehavior of the spherical harmoncis mathematical
 functions

svn path=/trunk/externals/iem/iemmatrix/; revision=10518
---
 src/mtx_sh/legendre_a.c | 11 ++---------
 src/mtx_sh/sharmonics.c | 10 +++++++++-
 2 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/src/mtx_sh/legendre_a.c b/src/mtx_sh/legendre_a.c
index 687cb41..d4e53f4 100644
--- a/src/mtx_sh/legendre_a.c
+++ b/src/mtx_sh/legendre_a.c
@@ -25,15 +25,8 @@ static void legendre_first_recurrence (double *sintheta, LegendreWorkSpace *wl)
    // computes the legendre functions P_n^m(costheta) for m=n
    // from P_0^0
    for (n=1; n<=wl->nmax; n++) {
-      if ((n%2)==1) {
-          for (l=0,l0=0; l<wl->l; l++,l0+=incr) {
-	     wl->p[l0+n0+n] = -(2*n-1) * wl->p[l0+nmo0+n-1] * sintheta[l];
-	  }
-      }
-      else {
-          for (l=0,l0=0; l<wl->l; l++,l0+=incr) {
-	     wl->p[l0+n0+n] = -(2*n-1) * wl->p[l0+nmo0+n-1];
-	  }
+      for (l=0,l0=0; l<wl->l; l++,l0+=incr) {
+         wl->p[l0+n0+n] = -(2*n-1) * wl->p[l0+nmo0+n-1] * sintheta[l];
       }
       nmo0=n0;
       n0+=n+1;
diff --git a/src/mtx_sh/sharmonics.c b/src/mtx_sh/sharmonics.c
index 57f7367..8593182 100644
--- a/src/mtx_sh/sharmonics.c
+++ b/src/mtx_sh/sharmonics.c
@@ -56,7 +56,15 @@ static void sharmonics_multcheby12(SHWorkSpace *ws) {
    const int yincr=(ws->nmax+1)*(ws->nmax+1);
 
    for (n=0,ny0=0; n<=ws->nmax; n++) {
-      for (m=0; m<=n; m++) {
+      m=0;
+      ly0=0;
+      lt0=nt0;
+      for (l=0; l<ws->l; l++) {
+         ws->y[ly0+ny0+m]*= ws->wc->t[lt0+m];
+         ly0+=yincr;
+         lt0+=tincr;
+      }
+      for (m=1; m<=n; m++) {
 	 ly0=0;
 	 lt0=nt0;
 	 for (l=0; l<ws->l; l++) {
-- 
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