Method: Date.commercial

Defined in:
date_core.c

.commercial([cwyear = -4712[, cweek=1[, cwday=1[, start=Date::ITALY]]]]) ⇒ Object

Creates a date object denoting the given week date.

The week and the day of week should be a negative or a positive number (as a relative week/day from the end of year/week when negative). They should not be zero.

Date.commercial(2001)	#=> #<Date: 2001-01-01 ...>
Date.commercial(2002)	#=> #<Date: 2001-12-31 ...>
Date.commercial(2001,5,6)	#=> #<Date: 2001-02-03 ...>

See also jd and new.



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# File 'date_core.c', line 3457

static VALUE
date_s_commercial(int argc, VALUE *argv, VALUE klass)
{
    VALUE vy, vw, vd, vsg, y, fr, fr2, ret;
    int w, d;
    double sg;

    rb_scan_args(argc, argv, "04", &vy, &vw, &vd, &vsg);

    y = INT2FIX(-4712);
    w = 1;
    d = 1;
    fr2 = INT2FIX(0);
    sg = DEFAULT_SG;

    switch (argc) {
      case 4:
	val2sg(vsg, sg);
      case 3:
	num2int_with_frac(d, positive_inf);
      case 2:
	w = NUM2INT(vw);
      case 1:
	y = vy;
    }

    {
	VALUE nth;
	int ry, rw, rd, rjd, ns;

	if (!valid_commercial_p(y, w, d, sg,
				&nth, &ry,
				&rw, &rd, &rjd,
				&ns))
	    rb_raise(rb_eArgError, "invalid date");

	ret = d_simple_new_internal(klass,
				    nth, rjd,
				    sg,
				    0, 0, 0,
				    HAVE_JD);
    }
    add_frac();
    return ret;
}