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authormanga_osyo <manga.osyo@gmail.com>2019-03-16 14:42:24 +0900
committerNobuyoshi Nakada <nobu@ruby-lang.org>2019-05-23 22:30:19 +0900
commitf5415a95ce1d393a3fd1d7f657ba85d85171356a (patch)
tree6cbc9cdcba1020be455ed96bf7e90cd28fc7b7e1 /time.c
parentfe3ff5afb07e171fd950623c69abfbabbb2762a3 (diff)
downloadruby-f5415a95ce1d393a3fd1d7f657ba85d85171356a.tar.gz
Add `Time#ceil`.
Closes: https://github.com/ruby/ruby/pull/2133
Diffstat (limited to 'time.c')
-rw-r--r--time.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/time.c b/time.c
index ac9a13d7fd..d9729aee30 100644
--- a/time.c
+++ b/time.c
@@ -4287,6 +4287,67 @@ time_floor(int argc, VALUE *argv, VALUE time)
}
/*
+ * call-seq:
+ * time.ceil([ndigits]) -> new_time
+ *
+ * Ceils sub seconds to a given precision in decimal digits (0 digits by default).
+ * It returns a new Time object.
+ * +ndigits+ should be zero or a positive integer.
+ *
+ * require 'time'
+ *
+ * t = Time.utc(2010,3,30, 5,43,"25.0123456789".to_r)
+ * t.iso8601(10) #=> "2010-03-30T05:43:25.0123456789Z"
+ * t.ceil.iso8601(10) #=> "2010-03-30T05:43:26.0000000000Z"
+ * t.ceil(0).iso8601(10) #=> "2010-03-30T05:43:26.0000000000Z"
+ * t.ceil(1).iso8601(10) #=> "2010-03-30T05:43:25.1000000000Z"
+ * t.ceil(2).iso8601(10) #=> "2010-03-30T05:43:25.0200000000Z"
+ * t.ceil(3).iso8601(10) #=> "2010-03-30T05:43:25.0130000000Z"
+ * t.ceil(4).iso8601(10) #=> "2010-03-30T05:43:25.0124000000Z"
+ *
+ * t = Time.utc(1999,12,31, 23,59,59)
+ * (t + 0.4).ceil.iso8601(3) #=> "2000-01-01T00:00:00.000Z"
+ * (t + 0.9).ceil.iso8601(3) #=> "2000-01-01T00:00:00.000Z"
+ * (t + 1.4).ceil.iso8601(3) #=> "2000-01-01T00:00:01.000Z"
+ * (t + 1.9).ceil.iso8601(3) #=> "2000-01-01T00:00:01.000Z"
+ *
+ * t = Time.utc(1999,12,31, 23,59,59)
+ * (t + 0.123456789).ceil(4).iso8601(6) #=> "1999-12-31T23:59:59.123500Z"
+ */
+
+static VALUE
+time_ceil(int argc, VALUE *argv, VALUE time)
+{
+ VALUE ndigits, v, a, b, den;
+ long nd;
+ struct time_object *tobj;
+
+ if (!rb_check_arity(argc, 0, 1) || NIL_P(ndigits = argv[0]))
+ ndigits = INT2FIX(0);
+ else
+ ndigits = rb_to_int(ndigits);
+
+ nd = NUM2LONG(ndigits);
+ if (nd < 0)
+ rb_raise(rb_eArgError, "negative ndigits given");
+
+ GetTimeval(time, tobj);
+ v = w2v(rb_time_unmagnify(tobj->timew));
+
+ a = INT2FIX(1);
+ b = INT2FIX(10);
+ while (0 < nd) {
+ if (nd & 1)
+ a = mulv(a, b);
+ b = mulv(b, b);
+ nd = nd >> 1;
+ }
+ den = quov(INT2FIX(1), a);
+ v = modv(v, den);
+ return time_add(tobj, time, subv(den, v), 1);
+}
+
+/*
* call-seq:
* time.sec -> integer
*
@@ -5689,6 +5750,7 @@ Init_Time(void)
rb_define_method(rb_cTime, "succ", time_succ, 0);
rb_define_method(rb_cTime, "round", time_round, -1);
rb_define_method(rb_cTime, "floor", time_floor, -1);
+ rb_define_method(rb_cTime, "ceil", time_ceil, -1);
rb_define_method(rb_cTime, "sec", time_sec, 0);
rb_define_method(rb_cTime, "min", time_min, 0);