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fix bug in RNG example

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This commit is contained in:
Andrew Kelley 2016-01-06 03:53:30 -07:00
parent 3fbde00eee
commit f1eafe4ebb
1 changed files with 13 additions and 6 deletions
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19
example/rand/main.zig
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@ -81,7 +81,7 @@ struct Rand {
// does not populate the remaining (buf.len % 4) bytes
fn get_bytes_aligned(r: &Rand, buf: []u8) -> usize {
var bytes_left = buf.len;
while (bytes_left > 4) {
while (bytes_left >= 4) {
// TODO: array access so we can remove .ptr
*(&buf.ptr[buf.len - bytes_left] as &u32) = r.get_u32();
bytes_left -= #sizeof(u32);
@ -104,10 +104,17 @@ pub fn rand_init(r: &Rand, seed: u32) {
pub fn main(argc: isize, argv: &&u8, env: &&u8) -> i32 {
var rand : Rand;
rand_init(&rand, 13);
const answer = rand.range_u64(0, 100) + 1;
print_str("random number: ");
print_u64(answer);
print_str("\n");
var i : u8 = 0;
while (i < 20) {
rand_init(&rand, i);
var j : u8 = 0;
while (j < 20) {
print_u64(rand.range_u64(0, 100) + 1);
print_str(" ");
j += 1;
}
print_str("\n");
i += 1;
}
return 0;
}