diff options
Diffstat (limited to 'src/numeric.c')
| -rw-r--r-- | src/numeric.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/src/numeric.c b/src/numeric.c index 14c0b76a6..1a3c903f0 100644 --- a/src/numeric.c +++ b/src/numeric.c @@ -820,11 +820,13 @@ fix_xor(mrb_state *mrb, mrb_value x) static mrb_value lshift(mrb_state *mrb, mrb_int val, mrb_int width) { - mrb_assert(width >= 0); + mrb_assert(width > 0); if (width > NUMERIC_SHIFT_WIDTH_MAX) { - mrb_raisef(mrb, E_RANGE_ERROR, "width(%S) > (%S:MRB_INT_BIT-1)", - mrb_fixnum_value(width), - mrb_fixnum_value(NUMERIC_SHIFT_WIDTH_MAX)); + mrb_float f = (mrb_float)val; + while (width--) { + f *= 2; + } + return mrb_float_value(mrb, f); } return mrb_fixnum_value(val << width); } @@ -832,7 +834,7 @@ lshift(mrb_state *mrb, mrb_int val, mrb_int width) static mrb_value rshift(mrb_int val, mrb_int width) { - mrb_assert(width >= 0); + mrb_assert(width > 0); if (width >= NUMERIC_SHIFT_WIDTH_MAX) { if (val < 0) { return mrb_fixnum_value(-1); |