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(gmp.info)Miscellaneous Float Functions

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Miscellaneous Functions
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 - Function: void mpf_ceil (mpf_t ROP, mpf_t OP)
 - Function: void mpf_floor (mpf_t ROP, mpf_t OP)
 - Function: void mpf_trunc (mpf_t ROP, mpf_t OP)
     Set ROP to OP rounded to an integer.  `mpf_ceil' rounds to the
     next higher integer, `mpf_floor' to the next lower, and `mpf_trunc'
     to the integer towards zero.

 - Function: int mpf_integer_p (mpf_t OP)
     Return non-zero if OP is an integer.

 - Function: int mpf_fits_ulong_p (mpf_t OP)
 - Function: int mpf_fits_slong_p (mpf_t OP)
 - Function: int mpf_fits_uint_p (mpf_t OP)
 - Function: int mpf_fits_sint_p (mpf_t OP)
 - Function: int mpf_fits_ushort_p (mpf_t OP)
 - Function: int mpf_fits_sshort_p (mpf_t OP)
     Return non-zero if OP would fit in the respective C data type, when
     truncated to an integer.

 - Function: void mpf_urandomb (mpf_t ROP, gmp_randstate_t STATE,
          unsigned long int NBITS)
     Generate a uniformly distributed random float in ROP, such that 0
     <= ROP < 1, with NBITS significant bits in the mantissa.

     The variable STATE must be initialized by calling one of the
     `gmp_randinit' functions (Note: Random State Initialization)
     before invoking this function.

 - Function: void mpf_random2 (mpf_t ROP, mp_size_t MAX_SIZE, mp_exp_t
          EXP)
     Generate a random float of at most MAX_SIZE limbs, with long
     strings of zeros and ones in the binary representation.  The
     exponent of the number is in the interval -EXP to EXP.  This
     function is useful for testing functions and algorithms, since
     this kind of random numbers have proven to be more likely to
     trigger corner-case bugs.  Negative random numbers are generated
     when MAX_SIZE is negative.


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