Fcalva/cyclone
1
0
Fork 0
mirror of https://github.com/justinethier/cyclone.git synced 2025-07-13 15:57:36 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

Adding radix conversion for str2bignum

Browse source
This commit is contained in:
Justin Ethier 2022-06-13 22:53:41 -04:00
parent 63b62751fc
commit c2c637134f
1 changed files with 19 additions and 20 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

39
runtime.c
View file

@ -2966,26 +2966,25 @@ object str_to_bignum(void *data, object bignum, char *str, char *str_end, int ra
*/ */
radix_shift = nlz(radix) - 1; radix_shift = nlz(radix) - 1;
if (((uint32_t)1 << radix_shift) == radix) { /* Power of two? */ if (((uint32_t)1 << radix_shift) == radix) { /* Power of two? */
// TODO: int n = 0; /* Number of bits read so far into current big digit */
// int n = 0; /* Number of bits read so far into current big digit */
// /* Read from least to most significant digit to avoid shifting or scaling */
// /* Read from least to most significant digit to avoid shifting or scaling */ while (str_end > str) {
// while (str_end > str) { str_digit = hex_char_to_digit((int)*--str_end);
// str_digit = hex_char_to_digit((int)*--str_end);
// big_digit |= (uint32_t)str_digit << n;
// big_digit |= (C_uword)str_digit << n; n += radix_shift;
// n += radix_shift;
// if (n >= C_BIGNUM_DIGIT_LENGTH) {
// if (n >= C_BIGNUM_DIGIT_LENGTH) { n -= C_BIGNUM_DIGIT_LENGTH;
// n -= C_BIGNUM_DIGIT_LENGTH; *digits++ = big_digit;
// *digits++ = big_digit; big_digit = str_digit >> (radix_shift - n);
// big_digit = str_digit >> (radix_shift - n); }
// } }
// } assert(n < C_BIGNUM_DIGIT_LENGTH);
// assert(n < C_BIGNUM_DIGIT_LENGTH); /* If radix isn't an exact divisor of digit length, write final digit */
// /* If radix isn't an exact divisor of digit length, write final digit */ if (n > 0) *digits++ = big_digit;
// if (n > 0) *digits++ = big_digit; assert(digits == end_digits);
// assert(digits == end_digits);
} else { /* Not a power of two */ } else { /* Not a power of two */
uint32_t *last_digit = digits, factor; /* bignum starts as zero */ uint32_t *last_digit = digits, factor; /* bignum starts as zero */