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 ptozp(poly)

:: Converts a polynomial poly with rational coefficients into
an integral polynomial such that GCD of all its coefficients is 1.
 return

polynomial
 poly

polynomial

Converts the given polynomial by multiplying some rational number
into an integral polynomial such that GCD of all its coefficients is 1.

In general, operations on polynomials can be
performed faster for integer coefficients than for rational number
coefficients. Therefore, this function is conveniently used to improve
efficiency.

Function
red
does not convert rational coefficients of the
numerator.
You cannot obtain an integral polynomial by direct use of the function
nm()
. The function nm()
returns the numerator of its
argument, and a polynomial with rational coefficients is
the numerator of itself and will be returned as it is.
[0] ptozp(2*x+5/3);
6*x+5
[1] nm(2*x+5/3);
2*x+5/3
 References

section
nm
, dn
.
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