Function: polcoeff
Section: polynomials
C-Name: polcoeff0
Prototype: GLDn
Help: polcoeff(x,s,{v}): coefficient of degree s of x, or the s-th component
 for vectors or matrices (for which it is simpler to use x[]). With respect
 to the main variable if v is omitted, with respect to the variable v
 otherwise
Description: 
 (pol, 0):gen:copy      constant_term($1)
 (gen, small, ?var):gen polcoeff0($1, $2, $3)

