Class: GMP::Q

Inherits:
Numeric
  • Object
show all
Defined in:
ext/gmp.c

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ Object 



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# File 'ext/gmp.c', line 186

static VALUE r_gmpq_initialize(int argc, VALUE *argv, VALUE self)
{
  MP_RAT *self_val, *arg_val;

  if (argc != 0) {
    mpq_get_struct(self, self_val);
    if (argc == 1 && GMPQ_P(argv[0])) {
      mpq_get_struct(argv[0], arg_val);
      mpq_set (self_val, arg_val);
    } else if (argc == 1 && STRING_P(argv[0])) {
      mpq_str_set (self_val, STR2CSTR(argv[0]));
    } else {
      mpz_set_value (mpq_numref(self_val), argv[0]);
      if (argc == 2) {
        mpz_set_value (mpq_denref(self_val), argv[1]);
        mpq_canonicalize(self_val);
      }
    }
  }
  return Qnil;
}

Class Method Details

.new(*args) ⇒ Object 



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# File 'ext/gmp.c', line 103

static VALUE r_gmpqsg_new(int argc, VALUE *argv, VALUE klass)
{
  MP_RAT *res_val;
  VALUE res;

  (void)klass;

  if (argc > 2)
    rb_raise(rb_eArgError, "wrong # of arguments(%d for 0, 1 or 2)", argc);

  mpq_make_struct (res, res_val);
  mpq_init (res_val);
  rb_obj_call_init(res, argc, argv);
 
  return res;
}

Instance Method Details

#* ⇒ Object

#+ ⇒ Object

#- ⇒ Object

#-@ ⇒ Object

#/ ⇒ Object

#< ⇒ Object

#<= ⇒ Object

#<=> ⇒ Object

#== ⇒ Object

#> ⇒ Object

#>= ⇒ Object

#abs ⇒ Object

#abs! ⇒ Object

#ceil ⇒ Object

#cmpabs ⇒ Object

#coerce(arg) ⇒ Object 



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# File 'ext/gmp.c', line 327

static VALUE r_gmpq_coerce(VALUE self, VALUE arg)
{
  return rb_assoc_new(r_gmpqsg_new(1, &arg, cGMP_Q), self);
}

#den ⇒ Object

#floor ⇒ Object

#inv ⇒ Object

#inv! ⇒ Object

#neg! ⇒ Object

#num ⇒ Object

#sgn ⇒ Object

#swap ⇒ Object

#to_d ⇒ Object

#to_s ⇒ Object

Converts this mpq_t object to a Ruby string.



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# File 'ext/gmp.c', line 288

static VALUE r_gmpq_to_s(VALUE self)
{
  MP_RAT *self_val;
  MP_INT *self_val_num, *self_val_den;
  char *str;
  VALUE res;
  int sizeinbase;
  int offset;

  Data_Get_Struct(self, MP_RAT, self_val);

  if (mpz_cmp_ui(mpq_denref(self_val), 1) == 0) {
    str = mpz_get_str(NULL, 10, mpq_numref (self_val));
    res = rb_str_new2(str);
    free (str);
    return res;
  }

  self_val_num = mpq_numref(self_val);
  self_val_den = mpq_denref(self_val);

  sizeinbase = mpz_sizeinbase (self_val_num, 10) + mpz_sizeinbase (self_val_den, 10) + 3;
  str = malloc (sizeinbase);

  mpz_get_str (str, 10, self_val_num);
  offset = strlen (str);
  str[offset] = '/';
  mpz_get_str (str + offset + 1, 10, self_val_den);
  res = rb_str_new2(str);
  free (str);

  return res;
}

#trunc ⇒ Object