Function: _-_
Section: symbolic_operators
C-Name: gsub
Prototype: GG
Help: x-y: difference of x and y.
Description:
 (small, small):small:parens     $(1) - $(2)
 (lg, small):lg:parens           $(1) - $(2)
 (int, small):int                subis($1, $2)
 (small, int):int                subsi($1, $2)
 (int, int):int                  subii($1, $2)
 (real, small):real              subrs($1, $2)
 (small, real):real              subsr($1, $2)
 (real, real):real               subrr($1, $2)
 (mp, real):real                 mpsub($1, $2)
 (real, mp):real                 mpsub($1, $2)
 (mp, mp):mp                     mpsub($1, $2)
 (gen, small):gen                gsubgs($1, $2)
 (small, gen):gen                gsubsg($1, $2)
 (gen, gen):gen                  gsub($1, $2)
