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explicitly checks with ifdefs if our floating point and long long assumptions are verified

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antirez 2010-05-13 10:47:06 +02:00
parent fe24458996
commit 88e8d89f1e
1 changed files with 2 additions and 0 deletions
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redis.c
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@ -3513,6 +3513,7 @@ static int rdbSaveDoubleValue(FILE *fp, double val) {
len = 1; len = 1;
buf[0] = (val < 0) ? 255 : 254; buf[0] = (val < 0) ? 255 : 254;
} else { } else {
#if (DBL_MANT_DIG >= 52) && (LLONG_MAX == 0x7fffffffffffffffLL)
/* Check if the float is in a safe range to be casted into a /* Check if the float is in a safe range to be casted into a
* long long. We are assuming that long long is 64 bit here. * long long. We are assuming that long long is 64 bit here.
* Also we are assuming that there are no implementations around where * Also we are assuming that there are no implementations around where
@ -3527,6 +3528,7 @@ static int rdbSaveDoubleValue(FILE *fp, double val) {
if (val > min && val < max && val == ((double)((long long)val))) if (val > min && val < max && val == ((double)((long long)val)))
ll2string((char*)buf+1,sizeof(buf),(long long)val); ll2string((char*)buf+1,sizeof(buf),(long long)val);
else else
#endif
snprintf((char*)buf+1,sizeof(buf)-1,"%.17g",val); snprintf((char*)buf+1,sizeof(buf)-1,"%.17g",val);
buf[0] = strlen((char*)buf+1); buf[0] = strlen((char*)buf+1);
len = buf[0]+1; len = buf[0]+1;