*(gmp.info.gz)* Initializing Integers

Info Catalog
*(gmp.info.gz)* **Integer Functions**
*(gmp.info.gz)* **Integer Functions**
*(gmp.info.gz)* **Assigning Integers**
Initialization Functions
========================
The functions for integer arithmetic assume that all integer objects are
initialized. You do that by calling the function `mpz_init'. For
example,
{
mpz_t integ;
mpz_init (integ);
...
mpz_add (integ, ...);
...
mpz_sub (integ, ...);
/* Unless the program is about to exit, do ... */
mpz_clear (integ);
}
As you can see, you can store new values any number of times, once an
object is initialized.
*- Function: void mpz_init (mpz_t INTEGER)*
Initialize INTEGER, and set its value to 0.
*- Function: void mpz_init2 (mpz_t INTEGER, unsigned long N)*
Initialize INTEGER, with space for N bits, and set its value to 0.
N is only the initial space, INTEGER will grow automatically in
the normal way, if necessary, for subsequent values stored.
`mpz_init2' makes it possible to avoid such reallocations if a
maximum size is known in advance.
*- Function: void mpz_clear (mpz_t INTEGER)*
Free the space occupied by INTEGER. Call this function for all
`mpz_t' variables when you are done with them.
*- Function: void mpz_realloc2 (mpz_t INTEGER, unsigned long N)*
Change the space allocated for INTEGER to N bits. The value in
INTEGER is preserved if it fits, or is set to 0 if not.
This function can be used to increase the space for a variable in
order to avoid repeated automatic reallocations, or to decrease it
to give memory back to the heap.

Info Catalog
*(gmp.info.gz)* **Integer Functions**
*(gmp.info.gz)* **Integer Functions**
*(gmp.info.gz)* **Assigning Integers**

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