Zig 0.17.0-dev (Split by item)

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refill

Isaac64.refill

fn refill(self: *Isaac64) void

File

lib/std/Random/Isaac64.zig:47

Code

fn refill(self: *Isaac64) void {
    const midpoint = self.r.len / 2;

    self.c +%= 1;
    self.b +%= self.c;

    {
        var i: usize = 0;
        while (i < midpoint) : (i += 4) {
            self.step(~(self.a ^ (self.a << 21)), i + 0, 0, midpoint);
            self.step(self.a ^ (self.a >> 5), i + 1, 0, midpoint);
            self.step(self.a ^ (self.a << 12), i + 2, 0, midpoint);
            self.step(self.a ^ (self.a >> 33), i + 3, 0, midpoint);
        }
    }

    {
        var i: usize = 0;
        while (i < midpoint) : (i += 4) {
            self.step(~(self.a ^ (self.a << 21)), i + 0, midpoint, 0);
            self.step(self.a ^ (self.a >> 5), i + 1, midpoint, 0);
            self.step(self.a ^ (self.a << 12), i + 2, midpoint, 0);
            self.step(self.a ^ (self.a >> 33), i + 3, midpoint, 0);
        }
    }

    self.i = 0;
}