Go to the first, previous, next, last section, table of contents.
 dp_mag(p)

:: Computes the sum of bit lengths of coefficients of a distributed polynomial.
 return

integer
 p

distributed polynomial

This function computes the sum of bit lengths of coefficients of a
distributed polynomial p. If a coefficient is non integral,
the sum of bit lengths of the numerator and the denominator is taken.

This is a measure of the size of a polynomial. Especially for
zerodimensional system coefficient swells are often serious and
the returned value is useful to detect such swells.

If
ShowMag
and Print
for dp_gr_flags()
are on,
values of dp_mag()
for intermediate basis elements are shown.
[221] X=dp_ptod((x+2*y)^10,[x,y])$
[222] dp_mag(X);
115
 References

section
dp_gr_flags
, dp_gr_print
.
Go to the first, previous, next, last section, table of contents.