Function GetRandomReal

Returns a real in range [lowBound, highBound) that is: inclusive, exclusive. Bounds may be negative, but must be lowBound <= highBound. When lowBound==highBound, always returns that number.

Example (Lua):

SetRandomSeed(1229611)
string.format("%.16f", GetRandomReal(0, 0.002)) == "0.00"
SetRandomSeed(1229611)
string.format("%.16f", GetRandomReal(-0.002, 0)) == "-0.002"
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Note

Desyncs! The random number generator is a global, shared resource. Do not change its state in local blocks asynchronously.

Note

Undefined behavior when lowBound > highBound. Test code:

-- Set seed to zero and then generate and print a random real
function testRReal(low, high) SetRandomSeed(0); return string.format("%.16f", GetRandomReal(low,high)) end
testRReal(-42, 42) == "-4.0800933837890625"
testRReal(42, -42) == "79.9199066162109375"
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Note

See: GetRandomInt, SetRandomSeed.