Sign function?

Hello all, Simple question here. Does Informix have the ability to select the sign of value? Like it has the ability to select the ABS, MAX, etc. e.g. SELECT SIGN(elevation) ... or SELECT SIGN(Column1 - Column2) ... whisper: A competitor whose fullname shall be with held, but first letter is S and second letter is Y is reported to have this function. ========================================================================== == George Teachman == == Soil Scientist == == United States Department of Agriculture == == Natural Resource Conservation Service == == Fort Collins, Colorado == == 303-282-1960 == == == == george@talon.ftc.nrcs.usda.gov == == ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ == == Welcome to earth, third rock from the sun. Cause and effect. == == There are only three laws of nature, and one exception. == == 1) F=ma; 2) E=m(c squared); 3) You can't push a rope == == From these three laws all others can be derived. == == Except those explained by CHAOS THEORY. == ==========================================================================