Previous: I/O of Floats, Up: Floating-point Functions [Index]

- Function:
*void***mpf_ceil***(mpf_t*`rop`, const mpf_t`op`) - Function:
*void***mpf_floor***(mpf_t*`rop`, const mpf_t`op`) - Function:
*void***mpf_trunc***(mpf_t*`rop`, const 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***(const mpf_t*`op`) Return non-zero if

`op`is an integer.

- Function:
*int***mpf_fits_ulong_p***(const mpf_t*`op`) - Function:
*int***mpf_fits_slong_p***(const mpf_t*`op`) - Function:
*int***mpf_fits_uint_p***(const mpf_t*`op`) - Function:
*int***mpf_fits_sint_p***(const mpf_t*`op`) - Function:
*int***mpf_fits_ushort_p***(const mpf_t*`op`) - Function:
*int***mpf_fits_sshort_p***(const 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`, mp_bitcnt_t`nbits`) -
Generate a uniformly distributed random float in

`rop`, such that*0 <=*, with`rop`< 1`nbits`significant bits in the mantissa or less if the precision of`rop`is smaller.The variable

`state`must be initialized by calling one of the`gmp_randinit`

functions (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`(in limbs). This function is useful for testing functions and algorithms, since these 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.

Previous: I/O of Floats, Up: Floating-point Functions [Index]