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kprint: do not call Grisu2b with input 0.0 

It doesn't generate the expected string "0" for some reason, which
causes a freeze somewhere.
This commit is contained in:
Lephe 2021-05-21 22:30:51 +02:00
parent bc3b8f5602
commit 7e0ccc3f69
Signed by: Lephenixnoir
GPG Key ID: 1BBA026E13FC0495
1 changed files with 3 additions and 2 deletions
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5
src/kprint/kformat_fp.c
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@ -200,7 +200,7 @@ static void kformat_fp(KFORMAT_ARGS)
double v = va_arg(*args, double);
digit_buffer[0] = '0';
char *digits = digit_buffer + 1;
int length, e;
int length = 0, e = 0;
int is_e = (spec | 0x20) == 'e';
int is_f = (spec | 0x20) == 'f';
@ -214,7 +214,8 @@ static void kformat_fp(KFORMAT_ARGS)
if(special_notation(v, (spec & 0x20) == 0)) return;
/* fabs(v) = int(digits) * 10^e */
grisu2(v, digits, &length, &e);
if(v == 0.0) digits[length++] = '0';
else grisu2(v, digits, &length, &e);
digits[length] = 0;
/* In %f and %e, .precision is the number of decimal places; in %g, it