type Source … type Rand … // New returns a new Rand that uses random values from src // to generate other random values. func New(src Source) *Rand { … } // Int64 returns a non-negative pseudo-random 63-bit integer as an int64. func (r *Rand) Int64() int64 { … } // Uint32 returns a pseudo-random 32-bit value as a uint32. func (r *Rand) Uint32() uint32 { … } // Uint64 returns a pseudo-random 64-bit value as a uint64. func (r *Rand) Uint64() uint64 { … } // Int32 returns a non-negative pseudo-random 31-bit integer as an int32. func (r *Rand) Int32() int32 { … } // Int returns a non-negative pseudo-random int. func (r *Rand) Int() int { … } // Uint returns a pseudo-random uint. func (r *Rand) Uint() uint { … } // Int64N returns, as an int64, a non-negative pseudo-random number in the half-open interval [0,n). // It panics if n <= 0. func (r *Rand) Int64N(n int64) int64 { … } // Uint64N returns, as a uint64, a non-negative pseudo-random number in the half-open interval [0,n). // It panics if n == 0. func (r *Rand) Uint64N(n uint64) uint64 { … } // uint64n is the no-bounds-checks version of Uint64N. func (r *Rand) uint64n(n uint64) uint64 { … } // uint32n is an identical computation to uint64n // but optimized for 32-bit systems. func (r *Rand) uint32n(n uint32) uint32 { … } // Int32N returns, as an int32, a non-negative pseudo-random number in the half-open interval [0,n). // It panics if n <= 0. func (r *Rand) Int32N(n int32) int32 { … } // Uint32N returns, as a uint32, a non-negative pseudo-random number in the half-open interval [0,n). // It panics if n == 0. func (r *Rand) Uint32N(n uint32) uint32 { … } const is32bit … // IntN returns, as an int, a non-negative pseudo-random number in the half-open interval [0,n). // It panics if n <= 0. func (r *Rand) IntN(n int) int { … } // UintN returns, as a uint, a non-negative pseudo-random number in the half-open interval [0,n). // It panics if n == 0. func (r *Rand) UintN(n uint) uint { … } // Float64 returns, as a float64, a pseudo-random number in the half-open interval [0.0,1.0). func (r *Rand) Float64() float64 { … } // Float32 returns, as a float32, a pseudo-random number in the half-open interval [0.0,1.0). func (r *Rand) Float32() float32 { … } // Perm returns, as a slice of n ints, a pseudo-random permutation of the integers // in the half-open interval [0,n). func (r *Rand) Perm(n int) []int { … } // Shuffle pseudo-randomizes the order of elements. // n is the number of elements. Shuffle panics if n < 0. // swap swaps the elements with indexes i and j. func (r *Rand) Shuffle(n int, swap func(i, j int)) { … } var globalRand … //go:linkname runtime_rand runtime.rand func runtime_rand() uint64 type runtimeSource … func (runtimeSource) Uint64() uint64 { … } // Int64 returns a non-negative pseudo-random 63-bit integer as an int64 // from the default Source. func Int64() int64 { … } // Uint32 returns a pseudo-random 32-bit value as a uint32 // from the default Source. func Uint32() uint32 { … } // Uint64N returns, as a uint64, a pseudo-random number in the half-open interval [0,n) // from the default Source. // It panics if n <= 0. func Uint64N(n uint64) uint64 { … } // Uint32N returns, as a uint32, a pseudo-random number in the half-open interval [0,n) // from the default Source. // It panics if n <= 0. func Uint32N(n uint32) uint32 { … } // Uint64 returns a pseudo-random 64-bit value as a uint64 // from the default Source. func Uint64() uint64 { … } // Int32 returns a non-negative pseudo-random 31-bit integer as an int32 // from the default Source. func Int32() int32 { … } // Int returns a non-negative pseudo-random int from the default Source. func Int() int { … } // Uint returns a pseudo-random uint from the default Source. func Uint() uint { … } // Int64N returns, as an int64, a pseudo-random number in the half-open interval [0,n) // from the default Source. // It panics if n <= 0. func Int64N(n int64) int64 { … } // Int32N returns, as an int32, a pseudo-random number in the half-open interval [0,n) // from the default Source. // It panics if n <= 0. func Int32N(n int32) int32 { … } // IntN returns, as an int, a pseudo-random number in the half-open interval [0,n) // from the default Source. // It panics if n <= 0. func IntN(n int) int { … } // UintN returns, as a uint, a pseudo-random number in the half-open interval [0,n) // from the default Source. // It panics if n <= 0. func UintN(n uint) uint { … } // N returns a pseudo-random number in the half-open interval [0,n) from the default Source. // The type parameter Int can be any integer type. // It panics if n <= 0. func N[Int intType](n Int) Int { … } type intType … // Float64 returns, as a float64, a pseudo-random number in the half-open interval [0.0,1.0) // from the default Source. func Float64() float64 { … } // Float32 returns, as a float32, a pseudo-random number in the half-open interval [0.0,1.0) // from the default Source. func Float32() float32 { … } // Perm returns, as a slice of n ints, a pseudo-random permutation of the integers // in the half-open interval [0,n) from the default Source. func Perm(n int) []int { … } // Shuffle pseudo-randomizes the order of elements using the default Source. // n is the number of elements. Shuffle panics if n < 0. // swap swaps the elements with indexes i and j. func Shuffle(n int, swap func(i, j int)) { … } // NormFloat64 returns a normally distributed float64 in the range // [-math.MaxFloat64, +math.MaxFloat64] with // standard normal distribution (mean = 0, stddev = 1) // from the default Source. // To produce a different normal distribution, callers can // adjust the output using: // // sample = NormFloat64() * desiredStdDev + desiredMean func NormFloat64() float64 { … } // ExpFloat64 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. // To produce a distribution with a different rate parameter, // callers can adjust the output using: // // sample = ExpFloat64() / desiredRateParameter func ExpFloat64() float64 { … }
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