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Function Classes

There are six classes of functions in the GMP library:

  1. Functions for signed integer arithmetic, with names beginning with mpz_. The associated type is mpz_t. There are about 100 functions in this class.
  2. Functions for rational number arithmetic, with names beginning with mpq_. The associated type is mpq_t. There are about 20 functions in this class, but the functions in the previous class can be used for performing arithmetic on the numerator and denominator separately.
  3. Functions for floating-point arithmetic, with names beginning with mpf_. The associated type is mpf_t. There are about 50 functions is this class.
  4. Functions compatible with Berkeley GMP, such as itom, madd, and mult. The associated type is MINT.
  5. Fast low-level functions that operate on natural numbers. These are used by the functions in the preceding groups, and you can also call them directly from very time-critical user programs. These functions' names begin with mpn_. There are about 30 (hard-to-use) functions in this class. The associated type is array of mp_limb_t.
  6. Miscellaneous functions. Functions for setting up custom allocation and functions for generating random numbers.

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