* [9fans] factor.c bug (+ fix)
@ 2003-06-23 19:16 andrey mirtchovski
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From: andrey mirtchovski @ 2003-06-23 19:16 UTC (permalink / raw)
To: 9fans
factor.c crashes (in _floatfmt) when given a sufficiently large number.
i've added a check similar to the one in primes.c that fixed the problem:
plan9% diff factor.c /sys/src/cmd/factor.c
7,8d6
< double big = 9.007199254740992e15;
<
45,48d42
< if(n > big) {
< print("error: number too big\n");
< break;
< }
plan9%
that makes the program rather noisy, so it may be a good idea to
exits("number too big") instead of print()-ing the error message (the
program exits silently when given negative numbers, for example).
andrey
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2003-06-23 19:16 [9fans] factor.c bug (+ fix) andrey mirtchovski
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