Class: GMP::Rnd

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ Object 



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# File 'ext/mprnd.c', line 19

VALUE r_mprnd_initialize(int argc, VALUE *argv, VALUE self)
{
  VALUE mode, name, ieee754;
  mode = argv[0];
  (void)argc;
  const char *prefix;
  char name_val[10];
  if (MPFR_VERSION_MAJOR < 3)
    prefix = "GMP";
  else
    prefix = "MPFR";
  switch (FIX2INT(mode)) {
  case 0:
    sprintf(name_val, "%s_RNDN", prefix);
    ieee754 = rb_str_new2("roundTiesToEven");
    break;
  case 1:
    sprintf(name_val, "%s_RNDZ", prefix);
    ieee754 = rb_str_new2("roundTowardZero");
    break;
  case 2:
    sprintf(name_val, "%s_RNDU", prefix);
    ieee754 = rb_str_new2("roundTowardPositive");
    break;
  case 3:
    sprintf(name_val, "%s_RNDD", prefix);
    ieee754 = rb_str_new2("roundTowardNegative");
    break;
  case 4:
    sprintf(name_val, "%s_RNDA", prefix);
    ieee754 = rb_str_new2("roundAwayFromZero");
    break;
  default:
    sprintf(name_val, "%s_RNDN", prefix);
    ieee754 = rb_str_new2("roundTiesToEven");
  }
  name = rb_str_new2(name_val);
  rb_iv_set(self, "@mode",    mode);
  rb_iv_set(self, "@name", name);
  rb_iv_set(self, "@ieee754", ieee754);
  return Qnil;
}

Instance Attribute Details

#ieee754 ⇒ Object (readonly)

#mode ⇒ Object (readonly)

#name ⇒ Object (readonly)

Class Method Details

.new(*args) ⇒ Object 



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# File 'ext/mprnd.c', line 7

VALUE r_mprndsg_new(int argc, VALUE *argv, VALUE klass)
{
  VALUE res;
  int *res_value;
  (void)klass;
  res_value = 0;
  
  mprnd_make_struct(res, res_value);
  rb_obj_call_init(res, argc, argv);
  return res;
}

Instance Method Details

#inspect ⇒ Object 



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# File 'ext/mprnd.c', line 62

VALUE r_mprnd_inspect(VALUE self)
{
  return rb_iv_get(self, "@name");
}