58 lines
1.0 KiB
C
58 lines
1.0 KiB
C
#include <stdint.h>
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#include <string.h>
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#include "lnm/common.h"
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bool lnm_strneq(const char *s1, size_t s1_len, const char *s2, size_t s2_len) {
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return (s1_len == s2_len) && (memcmp(s1, s2, s1_len) == 0);
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}
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bool lnm_strnieq(const char *s1, size_t s1_len, const char *s2, size_t s2_len) {
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bool equal = s1_len == s2_len;
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for (size_t i = 0; i < s1_len && equal; i++) {
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equal = s1[i] == s2[i] ||
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(('a' <= s1[i]) && (s1[i] <= 'z') && (s1[i] - 32 == s2[i]));
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}
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return equal;
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}
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uint64_t lnm_ipow(uint64_t base, uint64_t power) {
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uint64_t res = 1;
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while (power > 0) {
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res *= base;
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power--;
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}
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return res;
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}
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uint64_t lnm_atoi(const char *s, size_t len) {
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uint64_t res = 0;
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for (size_t i = 0; i < len; i++) {
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if (s[i] < '0' || '9' < s[i]) {
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return 0;
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}
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uint64_t val = s[i] - '0';
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res += val * lnm_ipow(10, (len - 1) - i);
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}
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return res;
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}
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uint64_t lnm_digits(uint64_t num) {
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int digits = 1;
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while (num > 9) {
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digits++;
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num /= 10;
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}
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return digits;
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}
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