<<(p1)
public
Shifts big left numeric positions (right if numeric is
negative).
Show source
VALUE
rb_big_lshift(VALUE x, VALUE y)
{
int lshift_p;
size_t shift_numdigits;
int shift_numbits;
for (;;) {
if (FIXNUM_P(y)) {
long l = FIX2LONG(y);
unsigned long shift;
if (0 <= l) {
lshift_p = 1;
shift = l;
}
else {
lshift_p = 0;
shift = 1+(unsigned long)(-(l+1));
}
shift_numbits = (int)(shift & (BITSPERDIG-1));
shift_numdigits = shift >> bit_length(BITSPERDIG-1);
return bignorm(big_shift3(x, lshift_p, shift_numdigits, shift_numbits));
}
else if (RB_BIGNUM_TYPE_P(y)) {
return bignorm(big_shift2(x, 1, y));
}
y = rb_to_int(y);
}
}
RSpec
Ruby on Rails
Ruby
= private
= protected
