rulimine/stage23/lib/blib.s2.c
2021-11-20 21:47:51 +01:00

43 lines
848 B
C

#include <stdint.h>
#include <stddef.h>
#include <lib/blib.h>
#include <lib/print.h>
bool verbose = true;
bool quiet = false;
uint8_t bcd_to_int(uint8_t val) {
return (val & 0x0f) + ((val & 0xf0) >> 4) * 10;
}
uint8_t int_to_bcd(uint8_t val) {
return (val % 10) | (val / 10) << 4;
}
int digit_to_int(char c) {
if (c >= 'a' && c <= 'f') {
return (c - 'a') + 10;
}
if (c >= 'A' && c <= 'F') {
return (c - 'A') + 10;
}
if (c >= '0' && c <= '9'){
return c - '0';
}
return -1;
}
uint64_t strtoui(const char *s, const char **end, int base) {
uint64_t n = 0;
for (size_t i = 0; ; i++) {
int d = digit_to_int(s[i]);
if (d == -1) {
if (end != NULL)
*end = &s[i];
break;
}
n = n * base + d;
}
return n;
}