diff options
| -rw-r--r-- | miscutils/bc.c | 266 |
1 files changed, 133 insertions, 133 deletions
diff --git a/miscutils/bc.c b/miscutils/bc.c index ca95069..5b48f84 100644 --- a/miscutils/bc.c +++ b/miscutils/bc.c @@ -2196,139 +2196,6 @@ static BcStatus bc_num_binary(BcNum *a, BcNum *b, BcNum *c, size_t scale, return s; } -static bool bc_num_strValid(const char *val, size_t base) -{ - BcDig b; - bool radix; - - b = (BcDig)(base <= 10 ? base + '0' : base - 10 + 'A'); - radix = false; - for (;;) { - BcDig c = *val++; - if (c == '\0') - break; - if (c == '.') { - if (radix) return false; - radix = true; - continue; - } - if (c < '0' || c >= b || (c > '9' && c < 'A')) - return false; - } - return true; -} - -// Note: n is already "bc_num_zero()"ed, -// leading zeroes in "val" are removed -static void bc_num_parseDecimal(BcNum *n, const char *val) -{ - size_t len, i; - const char *ptr; - bool zero; - - len = strlen(val); - if (len == 0) - return; - - zero = true; - for (i = 0; val[i]; ++i) { - if (val[i] != '0' && val[i] != '.') { - zero = false; - break; - } - } - bc_num_expand(n, len); - - ptr = strchr(val, '.'); - - n->rdx = 0; - if (ptr != NULL) - n->rdx = (size_t)((val + len) - (ptr + 1)); - - if (!zero) { - i = len - 1; - for (;;) { - n->num[n->len] = val[i] - '0'; - ++n->len; - skip_dot: - if ((ssize_t)--i == (ssize_t)-1) break; - if (val[i] == '.') goto skip_dot; - } - } -} - -// Note: n is already "bc_num_zero()"ed, -// leading zeroes in "val" are removed -static void bc_num_parseBase(BcNum *n, const char *val, BcNum *base) -{ - BcStatus s; - BcNum temp, mult, result; - BcDig c = '\0'; - unsigned long v; - size_t i, digits; - - for (i = 0; ; ++i) { - if (val[i] == '\0') - return; - if (val[i] != '.' && val[i] != '0') - break; - } - - bc_num_init_DEF_SIZE(&temp); - bc_num_init_DEF_SIZE(&mult); - - for (;;) { - c = *val++; - if (c == '\0') goto int_err; - if (c == '.') break; - - v = (unsigned long) (c <= '9' ? c - '0' : c - 'A' + 10); - - s = bc_num_mul(n, base, &mult, 0); - if (s) goto int_err; - bc_num_ulong2num(&temp, v); - s = bc_num_add(&mult, &temp, n, 0); - if (s) goto int_err; - } - - bc_num_init(&result, base->len); - //bc_num_zero(&result); - already is - bc_num_one(&mult); - - digits = 0; - for (;;) { - c = *val++; - if (c == '\0') break; - digits++; - - v = (unsigned long) (c <= '9' ? c - '0' : c - 'A' + 10); - - s = bc_num_mul(&result, base, &result, 0); - if (s) goto err; - bc_num_ulong2num(&temp, v); - s = bc_num_add(&result, &temp, &result, 0); - if (s) goto err; - s = bc_num_mul(&mult, base, &mult, 0); - if (s) goto err; - } - - s = bc_num_div(&result, &mult, &result, digits); - if (s) goto err; - s = bc_num_add(n, &result, n, digits); - if (s) goto err; - - if (n->len != 0) { - if (n->rdx < digits) bc_num_extend(n, digits - n->rdx); - } else - bc_num_zero(n); - -err: - bc_num_free(&result); -int_err: - bc_num_free(&mult); - bc_num_free(&temp); -} - static void bc_num_printNewline(void) { if (G.prog.nchars == G.prog.len - 1) { @@ -2492,6 +2359,139 @@ static BcStatus bc_num_stream(BcNum *n, BcNum *base) } #endif +static bool bc_num_strValid(const char *val, size_t base) +{ + BcDig b; + bool radix; + + b = (BcDig)(base <= 10 ? base + '0' : base - 10 + 'A'); + radix = false; + for (;;) { + BcDig c = *val++; + if (c == '\0') + break; + if (c == '.') { + if (radix) return false; + radix = true; + continue; + } + if (c < '0' || c >= b || (c > '9' && c < 'A')) + return false; + } + return true; +} + +// Note: n is already "bc_num_zero()"ed, +// leading zeroes in "val" are removed +static void bc_num_parseDecimal(BcNum *n, const char *val) +{ + size_t len, i; + const char *ptr; + bool zero; + + len = strlen(val); + if (len == 0) + return; + + zero = true; + for (i = 0; val[i]; ++i) { + if (val[i] != '0' && val[i] != '.') { + zero = false; + break; + } + } + bc_num_expand(n, len); + + ptr = strchr(val, '.'); + + n->rdx = 0; + if (ptr != NULL) + n->rdx = (size_t)((val + len) - (ptr + 1)); + + if (!zero) { + i = len - 1; + for (;;) { + n->num[n->len] = val[i] - '0'; + ++n->len; + skip_dot: + if ((ssize_t)--i == (ssize_t)-1) break; + if (val[i] == '.') goto skip_dot; + } + } +} + +// Note: n is already "bc_num_zero()"ed, +// leading zeroes in "val" are removed +static void bc_num_parseBase(BcNum *n, const char *val, BcNum *base) +{ + BcStatus s; + BcNum temp, mult, result; + BcDig c = '\0'; + unsigned long v; + size_t i, digits; + + for (i = 0; ; ++i) { + if (val[i] == '\0') + return; + if (val[i] != '.' && val[i] != '0') + break; + } + + bc_num_init_DEF_SIZE(&temp); + bc_num_init_DEF_SIZE(&mult); + + for (;;) { + c = *val++; + if (c == '\0') goto int_err; + if (c == '.') break; + + v = (unsigned long) (c <= '9' ? c - '0' : c - 'A' + 10); + + s = bc_num_mul(n, base, &mult, 0); + if (s) goto int_err; + bc_num_ulong2num(&temp, v); + s = bc_num_add(&mult, &temp, n, 0); + if (s) goto int_err; + } + + bc_num_init(&result, base->len); + //bc_num_zero(&result); - already is + bc_num_one(&mult); + + digits = 0; + for (;;) { + c = *val++; + if (c == '\0') break; + digits++; + + v = (unsigned long) (c <= '9' ? c - '0' : c - 'A' + 10); + + s = bc_num_mul(&result, base, &result, 0); + if (s) goto err; + bc_num_ulong2num(&temp, v); + s = bc_num_add(&result, &temp, &result, 0); + if (s) goto err; + s = bc_num_mul(&mult, base, &mult, 0); + if (s) goto err; + } + + s = bc_num_div(&result, &mult, &result, digits); + if (s) goto err; + s = bc_num_add(n, &result, n, digits); + if (s) goto err; + + if (n->len != 0) { + if (n->rdx < digits) bc_num_extend(n, digits - n->rdx); + } else + bc_num_zero(n); + +err: + bc_num_free(&result); +int_err: + bc_num_free(&mult); + bc_num_free(&temp); +} + static BcStatus bc_num_parse(BcNum *n, const char *val, BcNum *base, size_t base_t) { |