28 lines
2.5 KiB
Markdown
28 lines
2.5 KiB
Markdown
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# Module - "rand"
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```golang
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rand := import("rand")
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```
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## Functions
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- `seed(seed int)`: uses the provided seed value to initialize the default Source to a deterministic state.
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- `exp_float() => float`: returns an exponentially distributed float64 in the range (0, +math.MaxFloat64] with an exponential distribution whose rate parameter (lambda) is 1 and whose mean is 1/lambda (1) from the default Source.
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- `float() => float`: returns, as a float64, a pseudo-random number in [0.0,1.0) from the default Source.
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- `int() => int`: returns a non-negative pseudo-random 63-bit integer as an int64 from the default Source.
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- `intn(n int) => int`: returns, as an int64, a non-negative pseudo-random number in [0,n) from the default Source. It panics if n <= 0.
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- `norm_float) => float`: returns a normally distributed float64 in the range [-math.MaxFloat64, +math.MaxFloat64] with standard normal distribution (mean = 0, stddev = 1) from the default Source.
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- `perm(n int) => [int]`: returns, as a slice of n ints, a pseudo-random permutation of the integers [0,n) from the default Source.
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- `read(p bytes) => int/error`: generates len(p) random bytes from the default Source and writes them into p. It always returns len(p) and a nil error.
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- `rand(src_seed int) => Rand`: returns a new Rand that uses random values from src to generate other random values.
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## Rand
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- `seed(seed int)`: uses the provided seed value to initialize the default Source to a deterministic state.
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- `exp_float() => float`: returns an exponentially distributed float64 in the range (0, +math.MaxFloat64] with an exponential distribution whose rate parameter (lambda) is 1 and whose mean is 1/lambda (1) from the default Source.
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- `float() => float`: returns, as a float64, a pseudo-random number in [0.0,1.0) from the default Source.
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- `int() => int`: returns a non-negative pseudo-random 63-bit integer as an int64 from the default Source.
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- `intn(n int) => int`: returns, as an int64, a non-negative pseudo-random number in [0,n) from the default Source. It panics if n <= 0.
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- `norm_float) => float`: returns a normally distributed float64 in the range [-math.MaxFloat64, +math.MaxFloat64] with standard normal distribution (mean = 0, stddev = 1) from the default Source.
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- `perm(n int) => [int]`: returns, as a slice of n ints, a pseudo-random permutation of the integers [0,n) from the default Source.
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- `read(p bytes) => int/error`: generates len(p) random bytes from the default Source and writes them into p. It always returns len(p) and a nil error.
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