fix invalid const expr eval for negative floats

2 files changed, 3 insertions, 3 deletions

diff --git a/src/bignum.cpp b/src/bignum.cpp
index 56215179b8..7cf5e791cb 100644
--- a/src/bignum.cpp
+++ b/src/bignum.cpp
@@ -112,7 +112,7 @@ void bignum_negate(BigNum *dest, BigNum *op) {
     dest->kind = op->kind;
 
     if (dest->kind == BigNumKindFloat) {
-        dest->data.x_float = -dest->data.x_float;
+        dest->data.x_float = -op->data.x_float;
     } else {
         dest->data.x_uint = op->data.x_uint;
         dest->is_negative = !op->is_negative;
diff --git a/test/run_tests.cpp b/test/run_tests.cpp
index 39cecb72d5..5d61da6cd1 100644
--- a/test/run_tests.cpp
+++ b/test/run_tests.cpp
@@ -1497,10 +1497,10 @@ export fn main(argc: c_int, argv: &&u8) -> c_int {
     const x: f64 = small;
     const y = i32(x);
     const z = f64(y);
-    printf(c"%.2f\n%d\n%.2f\n", x, y, z);
+    printf(c"%.2f\n%d\n%.2f\n%.2f\n", x, y, z, f64(-0.4));
     return 0;
 }
-    )SOURCE", "3.25\n3\n3.00\n");
+    )SOURCE", "3.25\n3\n3.00\n-0.40\n");
 }