diff options
Diffstat (limited to 'bignum.c')
-rw-r--r-- | bignum.c | 8 |
1 files changed, 3 insertions, 5 deletions
@@ -567,16 +567,14 @@ bary_small_lshift(BDIGIT *zds, const BDIGIT *xds, size_t n, int shift) } static void -bary_small_rshift(BDIGIT *zds, const BDIGIT *xds, size_t n, int shift, int sign_bit) +bary_small_rshift(BDIGIT *zds, const BDIGIT *xds, size_t n, int shift, BDIGIT higher_bdigit) { BDIGIT_DBL num = 0; BDIGIT x; assert(0 <= shift && shift < BITSPERDIG); - if (sign_bit) { - num = (~(BDIGIT_DBL)0) << BITSPERDIG; - } + num = BIGUP(higher_bdigit); while (n--) { num = (num | xds[n]) >> shift; x = xds[n]; @@ -4120,7 +4118,7 @@ big_shift3(VALUE x, int lshift_p, size_t shift_numdigits, int shift_numbits) zn = xn - s1; z = bignew(zn, 0); zds = BDIGITS(z); - bary_small_rshift(zds, xds+s1, zn, s2, hibitsx != 0); + bary_small_rshift(zds, xds+s1, zn, s2, hibitsx != 0 ? BDIGMAX : 0); twocomp2abs_bang(z, hibitsx != 0); } RB_GC_GUARD(x); |