From 091c300de876434ade340f1079f7bfb377539d75 Mon Sep 17 00:00:00 2001
From: Franz Zotter <fzotter@users.sourceforge.net>
Date: Thu, 15 Jan 2009 11:44:21 +0000
Subject: considered dependency of [mtx_eig] for complex eigenvalues on recent
 gsl versions

svn path=/trunk/externals/iem/iemmatrix/; revision=10558
---
 src/config.h.in  |  4 ++++
 src/configure.ac |  2 +-
 src/mtx_eig.c    | 10 +++++-----
 3 files changed, 10 insertions(+), 6 deletions(-)

(limited to 'src')

diff --git a/src/config.h.in b/src/config.h.in
index ce9d7bf..116d8ce 100644
--- a/src/config.h.in
+++ b/src/config.h.in
@@ -10,5 +10,9 @@
 /* do we have libgsl installed? */
 #undef HAVE_LIBGSL
 
+/* can libgsl compute complex eigenvalues? */
+#undef HAVE_GSL_EIGEN_NONSYMM
+
+
 
 #endif /* CONFIG_H_ */
diff --git a/src/configure.ac b/src/configure.ac
index 9382701..4849757 100644
--- a/src/configure.ac
+++ b/src/configure.ac
@@ -76,7 +76,7 @@ dnl for gnu scientific library -lgsl:
 dnl AC_CHECK_LIB([m], [cos])
 AC_CHECK_LIB([gslcblas], [cblas_dgemm])
 AC_CHECK_LIB([gsl], [gsl_blas_dgemm])
-AC_CHECK_FUNCS([gsl], [gsl_eigen_nonsymm], )
+AC_CHECK_LIB([gsl], [gsl_eigen_nonsymm],AC_DEFINE(HAVE_GSL_EIGEN_NONSYMM,1,[can gsl compute complex eigenvalues?]))
 
 
 if test "x$with_pd" != "x"; then
diff --git a/src/mtx_eig.c b/src/mtx_eig.c
index 5878078..1ab90c9 100644
--- a/src/mtx_eig.c
+++ b/src/mtx_eig.c
@@ -26,7 +26,7 @@ typedef struct _MTXEig_ MTXEig;
 struct _MTXEig_
 {
   t_object x_obj;
-#ifdef HAVE_LIBGSL_EIGEN_NONSYMM
+#ifdef HAVE_GSL_EIGEN_NONSYMM
   gsl_matrix *a;
   gsl_matrix_complex *q;
   gsl_vector_complex *l;
@@ -45,7 +45,7 @@ struct _MTXEig_
   enum WithEigenVectors withevs;
 };
 
-#ifdef HAVE_LIBGSL_EIGEN_NONSYMM
+#ifdef HAVE_GSL_EIGEN_NONSYMM
 static void allocMTXqlw (MTXEig *x) 
 {
      x->a=(gsl_matrix*)gsl_matrix_alloc(x->size,x->size);
@@ -103,7 +103,7 @@ static void deleteMTXqlw (MTXEig *x)
 
 static void deleteMTXEig (MTXEig *x) 
 {
-#ifdef HAVE_LIBGSL_EIGEN_NONSYMM 
+#ifdef HAVE_GSL_EIGEN_NONSYMM 
    deleteMTXqlw(x);
 #endif
 }
@@ -124,7 +124,7 @@ static void *newMTXEig (t_symbol *s, int argc, t_atom *argv)
   x->list_l_im = 0;
   x->list_q_re = 0; 
   x->list_q_im = 0; 
-#ifdef HAVE_LIBGSL_EIGEN_NONSYMM
+#ifdef HAVE_GSL_EIGEN_NONSYMM
   x->a=0;
   x->q=0;
   x->l=0;
@@ -159,7 +159,7 @@ static void mTXEigMatrix (MTXEig *x, t_symbol *s,
   int n,m;
   float f;
 
-#ifdef HAVE_LIBGSL_EIGEN_NONSYMM
+#ifdef HAVE_GSL_EIGEN_NONSYMM
   gsl_complex c;
   /* size check */
   if (!size) 
-- 
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