UPDATE: Adds 56 functions in the Statistical section

Uses statrs for numerical functions

REFACTOR: Put statistical functions on its own module

This might seem counter-intuitive but the wasm build after this refactor
is 1528 bytes smaller :)

base/src/test/statistical/test_fn_log_norm.rs

@@ -0,0 +1,61 @@
+#![allow(clippy::unwrap_used)]
+
+use crate::test::util::new_empty_model;
+
+#[test]
+fn test_fn_log_norm_dist_smoke() {
+    let mut model = new_empty_model();
+
+    // Valid: CDF and PDF
+    model._set("A1", "=LOGNORM.DIST(4, 3.5, 1.2, TRUE)");
+    model._set("A2", "=LOGNORM.DIST(4, 3.5, 1.2, FALSE)");
+
+    // Wrong number of arguments -> #ERROR!
+    model._set("A3", "=LOGNORM.DIST(4, 3.5, 1.2)");
+    model._set("A4", "=LOGNORM.DIST(4, 3.5, 1.2, TRUE, FALSE)");
+
+    // Domain errors:
+    // x <= 0 -> #NUM!
+    model._set("A5", "=LOGNORM.DIST(0, 3.5, 1.2, TRUE)");
+    // std_dev <= 0 -> #NUM!
+    model._set("A6", "=LOGNORM.DIST(4, 3.5, 0, TRUE)");
+
+    model.evaluate();
+
+    assert_eq!(model._get_text("A1"), *"0.039083556");
+    assert_eq!(model._get_text("A2"), *"0.017617597");
+
+    assert_eq!(model._get_text("A3"), *"#ERROR!");
+    assert_eq!(model._get_text("A4"), *"#ERROR!");
+    assert_eq!(model._get_text("A5"), *"#NUM!");
+    assert_eq!(model._get_text("A6"), *"#NUM!");
+}
+
+#[test]
+fn test_fn_log_norm_inv_smoke() {
+    let mut model = new_empty_model();
+
+    // Valid call
+    model._set("A1", "=LOGNORM.INV(0.5, 3.5, 1.2)");
+
+    // Wrong number of arguments -> #ERROR!
+    model._set("A2", "=LOGNORM.INV(0.5, 3.5)");
+    model._set("A3", "=LOGNORM.INV(0.5, 3.5, 1.2, 0)");
+
+    // Domain errors:
+    // probability <= 0 or >= 1 -> #NUM!
+    model._set("A4", "=LOGNORM.INV(0, 3.5, 1.2)");
+    model._set("A5", "=LOGNORM.INV(1, 3.5, 1.2)");
+    // std_dev <= 0 -> #NUM!
+    model._set("A6", "=LOGNORM.INV(0.5, 3.5, 0)");
+
+    model.evaluate();
+
+    assert_eq!(model._get_text("A1"), *"33.115451959");
+
+    assert_eq!(model._get_text("A2"), *"#ERROR!");
+    assert_eq!(model._get_text("A3"), *"#ERROR!");
+    assert_eq!(model._get_text("A4"), *"#NUM!");
+    assert_eq!(model._get_text("A5"), *"#NUM!");
+    assert_eq!(model._get_text("A6"), *"#NUM!");
+}