GMP Native Interface for .NET
Math.Gmp.Native
gmp_lib Class
gmp_lib Methods
_mpz_realloc Method
allocate Method
free Method
gmp_asprintf Method
gmp_fprintf Method
gmp_fscanf Method
gmp_printf Method
gmp_randclear Method
gmp_randinit_default Method
gmp_randinit_lc_2exp Method
gmp_randinit_lc_2exp_size Method
gmp_randinit_mt Method
gmp_randinit_set Method
gmp_randseed Method
gmp_randseed_ui Method
gmp_scanf Method
gmp_snprintf Method
gmp_sprintf Method
gmp_sscanf Method
gmp_urandomb_ui Method
gmp_urandomm_ui Method
gmp_vasprintf Method
gmp_vfprintf Method
gmp_vfscanf Method
gmp_vprintf Method
gmp_vscanf Method
gmp_vsnprintf Method
gmp_vsprintf Method
gmp_vsscanf Method
mp_get_memory_functions Method
mp_set_memory_functions Method
mpf_abs Method
mpf_add Method
mpf_add_ui Method
mpf_ceil Method
mpf_clear Method
mpf_clears Method
mpf_cmp Method
mpf_cmp_d Method
mpf_cmp_si Method
mpf_cmp_ui Method
mpf_cmp_z Method
mpf_div Method
mpf_div_2exp Method
mpf_div_ui Method
mpf_fits_sint_p Method
mpf_fits_slong_p Method
mpf_fits_sshort_p Method
mpf_fits_uint_p Method
mpf_fits_ulong_p Method
mpf_fits_ushort_p Method
mpf_floor Method
mpf_get_d Method
mpf_get_d_2exp Method
mpf_get_default_prec Method
mpf_get_prec Method
mpf_get_si Method
mpf_get_str Method
mpf_get_ui Method
mpf_init Method
mpf_init_set Method
mpf_init_set_d Method
mpf_init_set_si Method
mpf_init_set_str Method
mpf_init_set_ui Method
mpf_init2 Method
mpf_inits Method
mpf_inp_str Method
mpf_integer_p Method
mpf_mul Method
mpf_mul_2exp Method
mpf_mul_ui Method
mpf_neg Method
mpf_out_str Method
mpf_pow_ui Method
mpf_random2 Method
mpf_reldiff Method
mpf_set Method
mpf_set_d Method
mpf_set_default_prec Method
mpf_set_prec Method
mpf_set_prec_raw Method
mpf_set_q Method
mpf_set_si Method
mpf_set_str Method
mpf_set_ui Method
mpf_set_z Method
mpf_sgn Method
mpf_size Method
mpf_sqrt Method
mpf_sqrt_ui Method
mpf_sub Method
mpf_sub_ui Method
mpf_swap Method
mpf_trunc Method
mpf_ui_div Method
mpf_ui_sub Method
mpf_urandomb Method
mpn_add Method
mpn_add_1 Method
mpn_add_n Method
mpn_addmul_1 Method
mpn_and_n Method
mpn_andn_n Method
mpn_cmp Method
mpn_cnd_add_n Method
mpn_cnd_sub_n Method
mpn_cnd_swap Method
mpn_com Method
mpn_copyd Method
mpn_copyi Method
mpn_divexact_1 Method
mpn_divexact_by3 Method
mpn_divexact_by3c Method
mpn_divmod_1 Method
mpn_divrem_1 Method
mpn_gcd Method
mpn_gcd_1 Method
mpn_gcdext Method
mpn_get_str Method
mpn_hamdist Method
mpn_ior_n Method
mpn_iorn_n Method
mpn_lshift Method
mpn_mod_1 Method
mpn_mul Method
mpn_mul_1 Method
mpn_mul_n Method
mpn_nand_n Method
mpn_neg Method
mpn_nior_n Method
mpn_perfect_power_p Method
mpn_perfect_square_p Method
mpn_popcount Method
mpn_random Method
mpn_random2 Method
mpn_rshift Method
mpn_scan0 Method
mpn_scan1 Method
mpn_sec_add_1 Method
mpn_sec_add_1_itch Method
mpn_sec_div_qr Method
mpn_sec_div_qr_itch Method
mpn_sec_div_r Method
mpn_sec_div_r_itch Method
mpn_sec_invert Method
mpn_sec_invert_itch Method
mpn_sec_mul Method
mpn_sec_mul_itch Method
mpn_sec_powm Method
mpn_sec_powm_itch Method
mpn_sec_sqr Method
mpn_sec_sqr_itch Method
mpn_sec_sub_1 Method
mpn_sec_sub_1_itch Method
mpn_sec_tabselect Method
mpn_set_str Method
mpn_sizeinbase Method
mpn_sqr Method
mpn_sqrtrem Method
mpn_sub Method
mpn_sub_1 Method
mpn_sub_n Method
mpn_submul_1 Method
mpn_tdiv_qr Method
mpn_xnor_n Method
mpn_xor_n Method
mpn_zero Method
mpn_zero_p Method
mpq_abs Method
mpq_add Method
mpq_canonicalize Method
mpq_clear Method
mpq_clears Method
mpq_cmp Method
mpq_cmp_si Method
mpq_cmp_ui Method
mpq_cmp_z Method
mpq_denref Method
mpq_div Method
mpq_div_2exp Method
mpq_equal Method
mpq_get_d Method
mpq_get_den Method
mpq_get_num Method
mpq_get_str Method
mpq_init Method
mpq_inits Method
mpq_inp_str Method
mpq_inv Method
mpq_mul Method
mpq_mul_2exp Method
mpq_neg Method
mpq_numref Method
mpq_out_str Method
mpq_set Method
mpq_set_d Method
mpq_set_den Method
mpq_set_f Method
mpq_set_num Method
mpq_set_si Method
mpq_set_str Method
mpq_set_ui Method
mpq_set_z Method
mpq_sgn Method
mpq_sub Method
mpq_swap Method
mpz_2fac_ui Method
mpz_abs Method
mpz_add Method
mpz_add_ui Method
mpz_addmul Method
mpz_addmul_ui Method
mpz_and Method
mpz_bin_ui Method
mpz_bin_uiui Method
mpz_cdiv_q Method
mpz_cdiv_q_2exp Method
mpz_cdiv_q_ui Method
mpz_cdiv_qr Method
mpz_cdiv_qr_ui Method
mpz_cdiv_r Method
mpz_cdiv_r_2exp Method
mpz_cdiv_r_ui Method
mpz_cdiv_ui Method
mpz_clear Method
mpz_clears Method
mpz_clrbit Method
mpz_cmp Method
mpz_cmp_d Method
mpz_cmp_si Method
mpz_cmp_ui Method
mpz_cmpabs Method
mpz_cmpabs_d Method
mpz_cmpabs_ui Method
mpz_com Method
mpz_combit Method
mpz_congruent_2exp_p Method
mpz_congruent_p Method
mpz_congruent_ui_p Method
mpz_divexact Method
mpz_divexact_ui Method
mpz_divisible_2exp_p Method
mpz_divisible_p Method
mpz_divisible_ui_p Method
mpz_even_p Method
mpz_export Method
mpz_fac_ui Method
mpz_fdiv_q Method
mpz_fdiv_q_2exp Method
mpz_fdiv_q_ui Method
mpz_fdiv_qr Method
mpz_fdiv_qr_ui Method
mpz_fdiv_r Method
mpz_fdiv_r_2exp Method
mpz_fdiv_r_ui Method
mpz_fdiv_ui Method
mpz_fib_ui Method
mpz_fib2_ui Method
mpz_fits_sint_p Method
mpz_fits_slong_p Method
mpz_fits_sshort_p Method
mpz_fits_uint_p Method
mpz_fits_ulong_p Method
mpz_fits_ushort_p Method
mpz_gcd Method
mpz_gcd_ui Method
mpz_gcdext Method
mpz_get_d Method
mpz_get_d_2exp Method
mpz_get_si Method
mpz_get_str Method
mpz_get_ui Method
mpz_getlimbn Method
mpz_hamdist Method
mpz_import Method
mpz_init Method
mpz_init_set Method
mpz_init_set_d Method
mpz_init_set_si Method
mpz_init_set_str Method
mpz_init_set_ui Method
mpz_init2 Method
mpz_inits Method
mpz_inp_raw Method
mpz_inp_str Method
mpz_invert Method
mpz_ior Method
mpz_jacobi Method
mpz_kronecker Method
mpz_kronecker_si Method
mpz_kronecker_ui Method
mpz_lcm Method
mpz_lcm_ui Method
mpz_legendre Method
mpz_limbs_finish Method
mpz_limbs_modify Method
mpz_limbs_read Method
mpz_limbs_write Method
mpz_lucnum_ui Method
mpz_lucnum2_ui Method
mpz_mfac_uiui Method
mpz_millerrabin Method
mpz_mod Method
mpz_mod_ui Method
mpz_mul Method
mpz_mul_2exp Method
mpz_mul_si Method
mpz_mul_ui Method
mpz_neg Method
mpz_nextprime Method
mpz_odd_p Method
mpz_out_raw Method
mpz_out_str Method
mpz_perfect_power_p Method
mpz_perfect_square_p Method
mpz_popcount Method
mpz_pow_ui Method
mpz_powm Method
mpz_powm_sec Method
mpz_powm_ui Method
mpz_primorial_ui Method
mpz_probab_prime_p Method
mpz_random Method
mpz_random2 Method
mpz_realloc2 Method
mpz_remove Method
mpz_roinit_n Method
mpz_root Method
mpz_rootrem Method
mpz_rrandomb Method
mpz_scan0 Method
mpz_scan1 Method
mpz_set Method
mpz_set_d Method
mpz_set_f Method
mpz_set_q Method
mpz_set_si Method
mpz_set_str Method
mpz_set_ui Method
mpz_setbit Method
mpz_sgn Method
mpz_si_kronecker Method
mpz_size Method
mpz_sizeinbase Method
mpz_sqrt Method
mpz_sqrtrem Method
mpz_sub Method
mpz_sub_ui Method
mpz_submul Method
mpz_submul_ui Method
mpz_swap Method
mpz_tdiv_q Method
mpz_tdiv_q_2exp Method
mpz_tdiv_q_ui Method
mpz_tdiv_qr Method
mpz_tdiv_qr_ui Method
mpz_tdiv_r Method
mpz_tdiv_r_2exp Method
mpz_tdiv_r_ui Method
mpz_tdiv_ui Method
mpz_tstbit Method
mpz_ui_kronecker Method
mpz_ui_pow_ui Method
mpz_ui_sub Method
mpz_urandomb Method
mpz_urandomm Method
mpz_xor Method
reallocate Method
ZeroMemory Method
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gmp_libmpq_set_str Method
Set rop from a null-terminated string str in the given base.

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 int mpq_set_str(
	mpq_t rop,
	char_ptr str,
	int base
)

Parameters

rop
Type: Math.Gmp.Nativempq_t
The result rational.
str
Type: Math.Gmp.Nativechar_ptr
The source string.
base
Type: SystemInt32
The base,

Return Value

Type: Int32
The return value is 0 if the entire string is a valid number, or -1 if not.
Remarks

The string can be an integer like "41" or a fraction like "41/152". The fraction must be in canonical form (see GNU MP - Rational Number Functions), or if not then mpq_canonicalize must be called.

The numerator and optional denominator are parsed the same as in mpz_set_str (see GNU MP - Assigning Integers). White space is allowed in the string, and is simply ignored. The base can vary from 2 to 62, or if base is 0 then the leading characters are used: 0x or 0X for hex, 0b or 0B for binary, 0 for octal, or decimal otherwise. Note that this is done separately for the numerator and denominator, so for instance 0xEF/100 is 239/100, whereas 0xEF/0x100 is 239/256.

Examples
Copy
// Create and initialize a new rational x.
mpq_t x = new mpq_t();
gmp_lib.mpq_init(x);

// Set the value of x.
char_ptr value = new char_ptr("12 345 678 909 876 543 211 234 567 890 987 654 321 / 234 567 890");
gmp_lib.mpq_set_str(x, value, 10);

// Assert the value of x.
char_ptr s = gmp_lib.mpq_get_str(char_ptr.Zero, 10, x);
Assert.IsTrue(s.ToString() == value.ToString().Replace(" ", ""));

// Release unmanaged memory allocated for x and string values.
gmp_lib.mpq_clear(x);
gmp_lib.free(value);
gmp_lib.free(s);
See Also