 SYNOPSIS

Applies a conversion to the two sides of an application.
 DESCRIPTION

If c is a conversion such that c `f` returns  f = f' and
c `x` returns  x = x', then COMB_CONV c `f x` returns
 f x = f' x'. That is, the conversion c is applied to the two
immediate subterms.
 FAILURE CONDITIONS

Never fails when applied to the initial conversion. On application to the term,
it fails if conversion given as the argument does, or if the theorem returned
by it is inappropriate.
 SEE ALSO

BINOP_CONV, COMB2_CONV, LAND_CONV, RAND_CONV, RATOR_CONV