FLINT3.7.0-dev
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flint_mpq_init_set_readonly, flint_mpq_clear_readonly

Synopsis#include <flint/fmpq.h>
void flint_mpq_init_set_readonly(mpq_t z, const fmpq_t f)source
void flint_mpq_clear_readonly(mpq_t z)source

Make the uninitialised mpq_t zz a read-only view of ff, without copying large components, and release it. ff must not change while zz is in use, and zz must not be modified. Declared only if gmp.h is included before any FLINT header.

The intended use is to pass an fmpq_t to a function that takes an mpq_t argument:

fmpq_t f;
...
{
    mpq_t z;

    flint_mpq_init_set_readonly(z, f);
    foo(..., z);
    flint_mpq_clear_readonly(z);
}
Cite this page

The FLINT team, “flint_mpq_init_set_readonly, flint_mpq_clear_readonly (fmpq.h),” FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev, 2026. https://flintlib.org/doc/fmpq/flint_mpq_init_set_readonly.html (generated 2026-11-02).