diff options
Diffstat (limited to 'numeric.c')
-rw-r--r-- | numeric.c | 18 |
1 files changed, 17 insertions, 1 deletions
@@ -2308,6 +2308,22 @@ int_pow(long x, unsigned long y) return LONG2NUM(z); } +static VALUE +int_round(int argc, VALUE* argv, VALUE num) +{ + VALUE nd; + int ndigits; + + if (argc == 0) return num; + rb_scan_args(argc, argv, "1", &nd); + ndigits = NUM2INT(nd); + if (ndigits > 0) { + return rb_Float(num); + } + ndigits = -ndigits; + return rb_funcall(num, '-', 1, rb_funcall(num, '%', 1, int_pow(10, ndigits))); +} + /* * call-seq: * fix ** other => Numeric @@ -3013,8 +3029,8 @@ Init_Numeric(void) rb_define_method(rb_cInteger, "to_int", int_to_i, 0); rb_define_method(rb_cInteger, "floor", int_to_i, 0); rb_define_method(rb_cInteger, "ceil", int_to_i, 0); - rb_define_method(rb_cInteger, "round", int_to_i, 0); rb_define_method(rb_cInteger, "truncate", int_to_i, 0); + rb_define_method(rb_cInteger, "round", int_round, -1); rb_cFixnum = rb_define_class("Fixnum", rb_cInteger); rb_include_module(rb_cFixnum, rb_mPrecision); |