gmp_lib.mpz_limbs_finish Method

GMP Native Interface for .NET

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gmp_libmpz_limbs_finish Method
Updates the internal size field of x.

Namespace:  Math.Gmp.Native
Assembly:  Math.Gmp.Native (in Math.Gmp.Native.dll) Version: 1.0.0.0 (1.0.0.0)
Syntax
Copy
public static void mpz_limbs_finish(
	mpz_t x,
	mp_size_t s
)
Public Shared Sub mpz_limbs_finish ( 
	x As mpz_t,
	s As mp_size_t
)
public:
static void mpz_limbs_finish(
	mpz_t^ x, 
	mp_size_t s
)
static member mpz_limbs_finish : 
        x : mpz_t * 
        s : mp_size_t -> unit

Parameters

x
Type: Math.Gmp.Nativempz_t
The operand integer.
s
Type: Math.Gmp.Nativemp_size_t
The number of limbs and the sign of x.
Remarks

Used after writing to the limb array pointer returned by mpz_limbs_write or mpz_limbs_modify is completed. The array should contain | s | valid limbs, representing the new absolute value for x, and the sign of x is taken from the sign of s. This function never reallocates x, so the limb pointer remains valid.

C++
Copy
void foo (mpz_t x)
{
    mp_size_t n, i;
    mp_limb_t* xp;

    n = mpz_size(x);
    xp = mpz_limbs_modify(x, 2 * n);
    for (i = 0; i < n; i++)
        xp[n + i] = xp[n - 1 - i];
    mpz_limbs_finish(x, mpz_sgn(x) < 0 ? - 2 * n : 2 * n);
}
See Also
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