Feat: adding logrand and exprand

crates/forth/src/words.rs

@@ -473,6 +473,26 @@ pub const WORDS: &[Word] = &[
         compile: Simple,
         varargs: false,
     },
+    Word {
+        name: "exprand",
+        aliases: &[],
+        category: "Probability",
+        stack: "(lo hi -- f)",
+        desc: "Exponential random biased toward lo. Both args must be positive",
+        example: "1.0 100.0 exprand => 3.7",
+        compile: Simple,
+        varargs: false,
+    },
+    Word {
+        name: "logrand",
+        aliases: &[],
+        category: "Probability",
+        stack: "(lo hi -- f)",
+        desc: "Exponential random biased toward hi. Both args must be positive",
+        example: "1.0 100.0 logrand => 87.2",
+        compile: Simple,
+        varargs: false,
+    },
     Word {
         name: "seed",
         aliases: &[],
@@ -2508,6 +2528,8 @@ pub(super) fn simple_op(name: &str) -> Option<Op> {
         "sound" => Op::NewCmd,
         "." => Op::Emit,
         "rand" => Op::Rand,
+        "exprand" => Op::ExpRand,
+        "logrand" => Op::LogRand,
         "seed" => Op::Seed,
         "cycle" => Op::Cycle,
         "pcycle" => Op::PCycle,