X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;ds=sidebyside;f=src%2Futil%2Frng.rs;h=63fbc99b52a847ea28e23e3e33dfc14916445058;hb=91dc91f0532b45dc0874a4003cc945aff600d991;hp=f0d4492521b82d090c33c3f570dff9472e6c767d;hpb=d18e54bd90e949267a025260cf09e10c3804875f;p=rust-lightning

diff --git a/src/util/rng.rs b/src/util/rng.rs
index f0d44925..63fbc99b 100644
--- a/src/util/rng.rs
+++ b/src/util/rng.rs
@@ -1,18 +1,12 @@
 #[cfg(not(feature = "fuzztarget"))]
 mod real_rng {
 	use rand::{thread_rng,Rng};
-	use bitcoin::util::uint::Uint256;
 
 	pub fn fill_bytes(data: &mut [u8]) {
 		let mut rng = thread_rng();
 		rng.fill_bytes(data);
 	}
 
-	pub fn rand_uint256() -> Uint256 {
-		let mut rng = thread_rng();
-		Uint256([rng.gen(), rng.gen(), rng.gen(), rng.gen()])
-	}
-
 	pub fn rand_f32() -> f32 {
 		let mut rng = thread_rng();
 		rng.next_f32()
@@ -23,20 +17,27 @@ pub use self::real_rng::*;
 
 #[cfg(feature = "fuzztarget")]
 mod fuzzy_rng {
-	use bitcoin::util::uint::Uint256;
+	use util::byte_utils;
+
+	static mut RNG_ITER: u64 = 0;
 
 	pub fn fill_bytes(data: &mut [u8]) {
-		for i in 0..data.len() {
-			data[i] = 0x42;
+		let rng = unsafe { RNG_ITER += 1; RNG_ITER -1 };
+		for i in 0..data.len() / 8 {
+			data[i*8..(i+1)*8].copy_from_slice(&byte_utils::be64_to_array(rng));
 		}
+		let rem = data.len() % 8;
+		let off = data.len() - rem;
+		data[off..].copy_from_slice(&byte_utils::be64_to_array(rng)[0..rem]);
 	}
 
-	pub fn rand_uint256() -> Uint256 {
-		Uint256([0xdeadbeef, 0x1badcafe, 0xbadbeef, 0xdeadcafe])
+	pub fn rand_f32() -> f32 {
+		let rng = unsafe { RNG_ITER += 1; RNG_ITER - 1 };
+		f64::from_bits(rng) as f32
 	}
 
-	pub fn rand_f32() -> f32 {
-		0.42
+	pub fn reset_rng_state() {
+		unsafe { RNG_ITER = 0; }
 	}
 }
 #[cfg(feature = "fuzztarget")]