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| author | Kaz Kylheku <kaz@kylheku.com> | 2016-01-18 06:24:09 -0800 |
|---|---|---|
| committer | Kaz Kylheku <kaz@kylheku.com> | 2016-01-18 06:24:09 -0800 |
| commit | cc8f11bf43842e38f0a515b8070f4a7afe9a716d (patch) | |
| tree | c5110ac4e87d541fca5405e78ae29c585242af62 /txr.1 | |
| parent | a1c7cc2f9faf4463722e78f24b9433dc9cf0bbf7 (diff) | |
| download | txr-cc8f11bf43842e38f0a515b8070f4a7afe9a716d.tar.gz txr-cc8f11bf43842e38f0a515b8070f4a7afe9a716d.tar.bz2 txr-cc8f11bf43842e38f0a515b8070f4a7afe9a716d.zip | |
Don't allow non-positive modulus in rand and random.
* rand.c (random): In fixnum case, allow only m >= 1.
The code is restructured so that this check is done
before we do some arithmetic with derived values,
where the behavior can become undefined.
* txr.1: Document the restriction on modulus range
for rand and random.
Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 7 |
1 files changed, 7 insertions, 0 deletions
@@ -34829,6 +34829,13 @@ object is the second argument and is optional. If it is omitted, the global .code *random-state* object is used. +The +.meta modulus +argument must be a positive integer. If +.meta modulus +is 1, then the function returns zero without altering the state of the +pseudo-random number generator. + .SS* Time .coNP Functions @ time and @ time-usec .synb |