------- Comment #4 from dominiq at lps dot ens dot fr 2009-07-07 19:53 ------- Steven beats me with the f95 standard: sign(0.5,-0.0) shall give -0.5.
Note that the code in comment #0 gives 'pass' with ifort but fails with g77. I think the code is invalid since mysign is implicitely typed as integer. In addition I don't understand how it works with ifort: if sign(0.5,0.0) and sign(0.5,-0.0) are expected to give 0.5, then test=0.0 and test2=0.5. May be one could consider to ignore signed zero in SIGN with -std=legacy(?). -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40675
