[Bug fortran/14396] New: [gfortran] Intrinsic SQRT and CSQRT give wrong answer with COMPLEX argument.
bdavis9659 at comcast dot net
gcc-bugzilla@gcc.gnu.org
Wed Mar 3 04:41:00 GMT 2004
Distilled from test FM833 of the NIST F77 compiler validation suite.
COMPLEX BVC,AVC
BVC = (3.0, 4.0)
AVC = CSQRT(BVC) - SQRT(BVC)
print*,'CSQRT(BVC)=',CSQRT(BVC),' SQRT(BVC)=',SQRT(BVC)
print*,'CSQRT(BVC) - SQRT(BVC)',avc
end
$ /usr/local/bin/gfortran -static z.f
$ ./a.out
CSQRT(BVC)= ( NaN, 0.000000 ) SQRT(BVC)= ( NaN, 0.000000 )
CSQRT(BVC) - SQRT(BVC) ( NaN, 0.000000 )
Same code with g77:
$ g77 z.f
$ ./a.out
CSQRT(BVC)= (2.,1.) SQRT(BVC)= (2.,1.)
CSQRT(BVC) - SQRT(BVC) (0.,0.)
--
Summary: [gfortran] Intrinsic SQRT and CSQRT give wrong answer
with COMPLEX argument.
Product: gcc
Version: tree-ssa
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: bdavis9659 at comcast dot net
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14396
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