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authorjames <james@8a072113-8704-0410-8d35-dd094bca7971>2012-04-11 01:50:07 +0000
committerjames <james@8a072113-8704-0410-8d35-dd094bca7971>2012-04-11 01:50:07 +0000
commitc254495b4de7667073f941bdfe89f8325c66687b (patch)
tree3f7ceda8c608e0a9f2cf235a8b2059719b3ca40b /SRC/clanhf.f
parent1b5afc4229b27adcfb5a1f761e308710ff4c7d56 (diff)
added code to handle N=1 case to fix divide by zero problem that occurs
when the single (diagonal) element is negative see: http://icl.cs.utk.edu/lapack-forum/archives/lapack/msg01195.html
Diffstat (limited to 'SRC/clanhf.f')
-rw-r--r--SRC/clanhf.f3
1 files changed, 3 insertions, 0 deletions
diff --git a/SRC/clanhf.f b/SRC/clanhf.f
index af5c16f8..988cd708 100644
--- a/SRC/clanhf.f
+++ b/SRC/clanhf.f
@@ -286,6 +286,9 @@
IF( N.EQ.0 ) THEN
CLANHF = ZERO
RETURN
+ ELSE IF( N.EQ.1 ) THEN
+ CLANHF = ABS( A(0) )
+ RETURN
END IF
*
* set noe = 1 if n is odd. if n is even set noe=0