method

new

v1_9_3_125 - Show latest stable - 0 notes - Class: BigDecimal

new(p1, p2 = v2) public

initial

The initial value, as an Integer, a Float, a Rational,

a BigDecimal, or a String.
If it is a String, spaces are ignored and unrecognized characters
terminate the value.

digits

The number of significant digits, as a Fixnum. If omitted or 0,

the number of significant digits is determined from the initial
value.

The actual number of significant digits used in computation is usually larger than the specified number.

Show source

static VALUE
BigDecimal_new(int argc, VALUE *argv, VALUE self)
{
    ENTER(5);
    Real *pv;
    size_t mf;
    VALUE  nFig;
    VALUE  iniValue;

    if (rb_scan_args(argc, argv, "11", &iniValue, &nFig) == 1) {
        mf = 0;
    }
    else {
        mf = GetPositiveInt(nFig);
    }

    switch (TYPE(iniValue)) {
      case T_DATA:
        if (is_kind_of_BigDecimal(iniValue)) {
            pv = VpDup(DATA_PTR(iniValue));
            return ToValue(pv);
        }
        break;

      case T_FIXNUM:
        /* fall through */
      case T_BIGNUM:
        return ToValue(GetVpValue(iniValue, 1));

      case T_FLOAT:
        if (mf > DBL_DIG+1) {
            rb_raise(rb_eArgError, "precision too large.");
        }
        /* fall through */
      case T_RATIONAL:
        if (NIL_P(nFig)) {
            rb_raise(rb_eArgError, "can't omit precision for a Rational.");
        }
        return ToValue(GetVpValueWithPrec(iniValue, mf, 1));

      case T_STRING:
        /* fall through */
      default:
        break;
    }
    SafeStringValue(iniValue);
    GUARD_OBJ(pv, VpNewRbClass(mf, RSTRING_PTR(iniValue),self));

    return ToValue(pv);
}

new

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