Float function isPositive, isNegative, and isZero

compiler/builtins/src/std.rs

@@ -331,6 +331,18 @@ pub fn types() -> MutMap<Symbol, (SolvedType, Region)> {
 
     // Float module
 
+    // isGt or (>) : Num a, Num a -> Bool
+    add_type(
+        Symbol::FLOAT_GT,
+        SolvedType::Func(vec![float_type(), float_type()], Box::new(bool_type())),
+    );
+
+    // eq or (==) : Num a, Num a -> Bool
+    add_type(
+        Symbol::FLOAT_EQ,
+        SolvedType::Func(vec![float_type(), float_type()], Box::new(bool_type())),
+    );
+
     // div : Float, Float -> Float
     add_type(
         Symbol::FLOAT_DIV,

compiler/builtins/src/unique.rs

@@ -415,6 +415,18 @@ pub fn types() -> MutMap<Symbol, (SolvedType, Region)> {
 
     // Float module
 
+    // isGt or (>) : Num a, Num a -> Bool
+    add_type(
+        Symbol::FLOAT_GT,
+        unique_function(vec![float_type(UVAR1), float_type(UVAR2)], bool_type(UVAR3)),
+    );
+
+    // eq or (==) : Num a, Num a -> Bool
+    add_type(
+        Symbol::FLOAT_EQ,
+        unique_function(vec![float_type(UVAR1), float_type(UVAR2)], bool_type(UVAR3)),
+    );
+
     // div : Float, Float -> Float
     add_type(
         Symbol::FLOAT_DIV,

compiler/can/src/builtins.rs

@@ -37,9 +37,69 @@ pub fn builtin_defs(var_store: &VarStore) -> Vec<Def> {
         int_is_zero(var_store),
         int_is_positive(var_store),
         int_is_negative(var_store),
+        float_is_positive(var_store),
+        float_is_negative(var_store),
+        float_is_zero(var_store),
     ]
 }
 
+/// Float.isZero : Float -> Bool
+fn float_is_zero(var_store: &VarStore) -> Def {
+    use crate::expr::Expr::*;
+
+    defn(
+        Symbol::FLOAT_IS_ZERO,
+        vec![Symbol::FLOAT_IS_ZERO_ARG],
+        var_store,
+        call(
+            Symbol::FLOAT_EQ,
+            vec![
+                Float(var_store.fresh(), 0.0),
+                Var(Symbol::FLOAT_IS_ZERO_ARG),
+            ],
+            var_store,
+        ),
+    )
+}
+
+/// Float.isNegative : Float -> Bool
+fn float_is_negative(var_store: &VarStore) -> Def {
+    use crate::expr::Expr::*;
+
+    defn(
+        Symbol::FLOAT_IS_NEGATIVE,
+        vec![Symbol::FLOAT_IS_NEGATIVE_ARG],
+        var_store,
+        call(
+            Symbol::FLOAT_GT,
+            vec![
+                Float(var_store.fresh(), 0.0),
+                Var(Symbol::FLOAT_IS_NEGATIVE_ARG),
+            ],
+            var_store,
+        ),
+    )
+}
+
+/// Float.isPositive : Float -> Bool
+fn float_is_positive(var_store: &VarStore) -> Def {
+    use crate::expr::Expr::*;
+
+    defn(
+        Symbol::FLOAT_IS_POSITIVE,
+        vec![Symbol::FLOAT_IS_POSITIVE_ARG],
+        var_store,
+        call(
+            Symbol::FLOAT_GT,
+            vec![
+                Var(Symbol::FLOAT_IS_POSITIVE_ARG),
+                Float(var_store.fresh(), 0.0),
+            ],
+            var_store,
+        ),
+    )
+}
+
 /// Int.isNegative : Int -> Bool
 fn int_is_negative(var_store: &VarStore) -> Def {
     use crate::expr::Expr::*;

compiler/gen/tests/gen_builtins.rs

@@ -29,24 +29,18 @@ mod gen_builtins {
 
     #[test]
     fn f64_sqrt() {
-        with_larger_debug_stack(|| {
         assert_evals_to!("Float.sqrt 144", 12.0, f64);
-        })
     }
 
     #[test]
     fn f64_round() {
-        with_larger_debug_stack(|| {
         assert_evals_to!("Float.round 3.6", 4, i64);
-        })
     }
 
     #[test]
     fn f64_abs() {
-        with_larger_debug_stack(|| {
         assert_evals_to!("Float.abs -4.7", 4.7, f64);
         assert_evals_to!("Float.abs 5.8", 5.8, f64);
-        })
     }
 
     #[test]
@@ -57,9 +51,7 @@ mod gen_builtins {
 
     #[test]
     fn empty_list_literal() {
-        with_larger_debug_stack(|| {
         assert_evals_to!("[]", &[], &'static [i64]);
-        })
     }
 
     #[test]
@@ -69,7 +61,6 @@ mod gen_builtins {
 
     #[test]
     fn gen_if_fn() {
-        with_larger_debug_stack(|| {
         assert_evals_to!(
             indoc!(
                 r#"
@@ -87,7 +78,6 @@ mod gen_builtins {
             -1,
             i64
         );
-        })
     }
 
     #[test]
@@ -272,23 +262,45 @@ mod gen_builtins {
     }
 
     #[test]
-    fn gen_is_zero() {
+    fn gen_is_zero_i64() {
         assert_evals_to!("Int.isZero 0", true, bool);
         assert_evals_to!("Int.isZero 1", false, bool);
     }
 
     #[test]
-    fn gen_is_positive() {
+    fn gen_is_positive_i64() {
         assert_evals_to!("Int.isPositive 0", false, bool);
         assert_evals_to!("Int.isPositive 1", true, bool);
         assert_evals_to!("Int.isPositive -5", false, bool);
     }
 
     #[test]
-    fn gen_is_negative() {
+    fn gen_is_negative_i64() {
         assert_evals_to!("Int.isNegative 0", false, bool);
         assert_evals_to!("Int.isNegative 3", false, bool);
-        assert_evals_to!("Int.isNegative -2", false, bool);
+        assert_evals_to!("Int.isNegative -2", true, bool);
+    }
+
+    #[test]
+    fn gen_is_positive_f64() {
+        assert_evals_to!("Float.isPositive 0.0", false, bool);
+        assert_evals_to!("Float.isPositive 4.7", true, bool);
+        assert_evals_to!("Float.isPositive -8.5", false, bool);
+    }
+
+    #[test]
+    fn gen_is_negative_f64() {
+        assert_evals_to!("Float.isNegative 0.0", false, bool);
+        assert_evals_to!("Float.isNegative 9.9", false, bool);
+        assert_evals_to!("Float.isNegative -4.4", true, bool);
+    }
+
+    #[test]
+    fn gen_is_zero_f64() {
+        assert_evals_to!("Float.isZero 0", true, bool);
+        assert_evals_to!("Float.isZero 0_0", true, bool);
+        assert_evals_to!("Float.isZero 0.0", true, bool);
+        assert_evals_to!("Float.isZero 1", false, bool);
     }
 
     #[test]

compiler/module/src/symbol.rs

@@ -641,13 +641,19 @@ define_builtins! {
         7 FLOAT_LOWEST: "lowest"
         8 FLOAT_ADD: "#add"
         9 FLOAT_SUB: "#sub"
-        10 FLOAT_EQ: "#eq"
+        10 FLOAT_EQ: "eq"
         11 FLOAT_ROUND: "round"
         12 FLOAT_LT: "#lt"
         13 FLOAT_LTE: "#lte"
-        14 FLOAT_GT: "#gt"
+        14 FLOAT_GT: "gt"
         15 FLOAT_GTE: "#gte"
         16 FLOAT_ABS: "abs"
+        17 FLOAT_IS_POSITIVE: "isPositive"
+        18 FLOAT_IS_POSITIVE_ARG: "isPositive#arg"
+        19 FLOAT_IS_NEGATIVE: "isNegative"
+        20 FLOAT_IS_NEGATIVE_ARG: "isNegative#arg"
+        21 FLOAT_IS_ZERO: "isZero"
+        22 FLOAT_IS_ZERO_ARG: "isZero#arg"
     }
     4 BOOL: "Bool" => {
         0 BOOL_BOOL: "Bool" imported // the Bool.Bool type alias