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Lib: Optimized printing of numbers

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One simple trick makes printing of numbers ~4x faster.
This commit is contained in:
Ondrej Zajicek 2024-11-08 18:54:13 +01:00
parent 5c6572c422
commit 49be4a0329
1 changed files with 19 additions and 4 deletions
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17
lib/printf.c
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@ -73,11 +73,26 @@ static char * number(char * str, u64 num, uint base, int size, int precision,
i = 0;
if (num == 0)
tmp[i++]='0';
else while (num != 0) {
else if (base == 10) {
/* Separate cases to have fixed divisors */
while (num != 0) {
uint res = num % 10;
num = num / 10;
tmp[i++] = digits[res];
}
} else if (base == 16) {
while (num != 0) {
uint res = num % 16;
num = num / 16;
tmp[i++] = digits[res];
}
} else {
while (num != 0) {
uint res = num % base;
num = num / base;
tmp[i++] = digits[res];
}
}
if (i > precision)
precision = i;
size -= precision;