From: Richard Kreckel <Richard.Kreckel@uni-mainz.de>
Date: Fri, 23 Sep 2005 00:02:29 +0000 (+0000)
Subject: * Fix a bug that selected the wrong algorithm for determinants of purely
X-Git-Tag: release_1-4-0~151
X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=commitdiff_plain;h=d744dbc38e4035c30abf07314c4dab19deb391e6

* Fix a bug that selected the wrong algorithm for determinants of purely
  numeric matrices with at least one floating point element.
---

diff --git a/ginac/matrix.cpp b/ginac/matrix.cpp
index 3cc20039..623537fe 100644
--- a/ginac/matrix.cpp
+++ b/ginac/matrix.cpp
@@ -730,12 +730,12 @@ ex matrix::determinant(unsigned algo) const
 	unsigned sparse_count = 0;  // counts non-zero elements
 	exvector::const_iterator r = m.begin(), rend = m.end();
 	while (r != rend) {
+		if (!r->info(info_flags::numeric))
+			numeric_flag = false;
 		exmap srl;  // symbol replacement list
 		ex rtest = r->to_rational(srl);
 		if (!rtest.is_zero())
 			++sparse_count;
-		if (!rtest.info(info_flags::numeric))
-			numeric_flag = false;
 		if (!rtest.info(info_flags::crational_polynomial) &&
 			 rtest.info(info_flags::rational_function))
 			normal_flag = true;