CLEAR_LOWBITS     663 bignum.c                           return ((1 < de - dp || CLEAR_LOWBITS(d, 8) != 0) ? 2 : 1) * sign;
CLEAR_LOWBITS     670 bignum.c                           return ((1 < de - dp || CLEAR_LOWBITS(d, 16) != 0) ? 2 : 1) * sign;
CLEAR_LOWBITS     678 bignum.c                           return ((1 < de - dp || CLEAR_LOWBITS(d, 32) != 0) ? 2 : 1) * sign;
CLEAR_LOWBITS     686 bignum.c                           return ((1 < de - dp || CLEAR_LOWBITS(d, 64) != 0) ? 2 : 1) * sign;