Header file:<ply-base.h>Namespace:plyRandom Numbers

The Random class generates pseudorandom integers and floating-point values.

	`Random()`
	`Random(u64 seed)`
`u32`	`generateU32()`
`u64`	`generateU64()`
`double`	`generateDouble()`

This class uses the well-known xoroshiro128** algorithm by Sebastiano Vigna and David Blackman internally. To use it, construct a Random object (optionally passing an explicit seed), then call any of its member functions as many times as needed.

This class isn't thread-safe. Its member functions must not be called concurrently from separate threads.

Random(): Constructs a pseudorandom number generator seeded from the system clock.
Random(u64 seed): Constructs a pseudorandom number generator using an explicit seed. The same seed always generates the same sequence of pseudorandom numbers.
u32 generateU32(): Returns an unsigned integer uniformly distibuted over the entire range of representable 32-bit values. Use the modulo % operator to restrict the value to a smaller range.
u64 generateU64(): Returns an unsigned integer uniformly distibuted over the entire range of representable 64-bit values. Use the modulo % operator to restrict the value to a smaller range.
double generateDouble(): Returns a uniformly-distributed floating-point number that is greater than or equal to 0.0 and less than 1.0.

// Generate some 4-digit random numbers
Random r;
Stream out = getStdOut();
for (u32 i = 0; i < 5; i++) {
    out.format("{}\n", r.generateU32() % 9000 + 1000);
}

Output

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