diff options
Diffstat (limited to 'time.c')
| -rw-r--r-- | time.c | 51 |
1 files changed, 14 insertions, 37 deletions
@@ -296,48 +296,25 @@ w2v(wideval_t w) } #if WIDEVALUE_IS_WIDER -static VALUE -rb_big_abs_find_maxbit(VALUE big) -{ - int num_zeros; - size_t bytesize; - VALUE res; - - bytesize = rb_absint_size(big, &num_zeros); - if (bytesize == 0) - return Qnil; - - res = mul(SIZET2NUM(bytesize), LONG2FIX(CHAR_BIT)); - if (num_zeros) - res = sub(res, LONG2FIX(num_zeros)); - return res; -} - static wideval_t v2w_bignum(VALUE v) { - long len = RBIGNUM_LEN(v); - BDIGIT *ds; - wideval_t w; - VALUE maxbit; - ds = RBIGNUM_DIGITS(v); - w = WIDEVAL_WRAP(v); - maxbit = rb_big_abs_find_maxbit(v); - if (NIL_P(maxbit)) + int sign; + uwideint_t u; + wideint_t i; + rb_integer_pack(v, &sign, NULL, &u, 1, sizeof(i), 0, + INTEGER_PACK_LSWORD_FIRST|INTEGER_PACK_NATIVE_BYTE_ORDER); + if (sign == 0) return WINT2FIXWV(0); - if (lt(maxbit, INT2FIX(sizeof(wideint_t) * CHAR_BIT - 2)) || - (eq(maxbit, INT2FIX(sizeof(wideint_t) * CHAR_BIT - 2)) && - RBIGNUM_NEGATIVE_P(v) && rb_absint_singlebit_p(v))) { - wideint_t i; - i = 0; - while (len) - i = (i << sizeof(BDIGIT)*CHAR_BIT) | ds[--len]; - if (RBIGNUM_NEGATIVE_P(v)) { - i = -i; - } - w = WINT2FIXWV(i); + else if (sign == -1) { + if (u <= -FIXWV_MIN) + return WINT2FIXWV(-(wideint_t)u); } - return w; + else if (sign == +1) { + if (u <= FIXWV_MAX) + return WINT2FIXWV((wideint_t)u); + } + return WIDEVAL_WRAP(v); } #endif |