Use a special-purpose function for prettyprinting interpreter results.
Use a special-purpose function for prettyprinting interpreter results.

This is because we want rounding here, but not in the general
prettyprinter.

ihc/futhark,diku-dk/futhark,HIPERFIT/futhark,mrakgr/futhark,HIPERFIT/futhark,mrakgr/futhark,HIPERFIT/futhark,diku-dk/futhark,ihc/futhark,ihc/futhark,diku-dk/futhark,diku-dk/futhark,CulpaBS/wbBach,diku-dk/futhark,mrakgr/futhark