bridge/class-master/depend/pari/src/basemath/mftrace.c
/* a, b two RgV of the same length, multiply as truncated power series */
a, b two RgV of the same length, multiply as truncated power series
a b two RgV of the same length multiply as truncated power series
static GEN
RgV_mul_RgXn(GEN a, GEN b)
{
  long n = lg(a)-1;
  GEN c;
  a = RgV_to_RgX(a,0);
  b = RgV_to_RgX(b,0); c = RgXn_mul(a, b, n);
  c = RgX_to_RgC(c,n); settyp(c,t_VEC); return c;
}
static GEN RgV_mul_RgXn ( GEN a , GEN b ) { long n = lg ( a ) - 1 ; GEN c ; a = RgV_to_RgX ( a , 0 ) ; b = RgV_to_RgX ( b , 0 ) ; c = RgXn_mul ( a , b , n ) ; c = RgX_to_RgC ( c , n ) ; settyp ( c , t_VEC ) ; return c ; }
a, b two RgV of the same length, multiply as truncated power series
a b two RgV of the same length multiply as truncated power series