fix: Fix negative inputs of Math.acosh (#1876)

Author: MaxGraey

std/assembly/math.ts

@@ -498,7 +498,11 @@ export namespace NativeMath {
 
   export function acosh(x: f64): f64 { // see: musl/src/math/acosh.c
     const s = reinterpret<f64>(0x3FE62E42FEFA39EF);
-    var e = reinterpret<u64>(x) >> 52 & 0x7FF;
+    var u = reinterpret<u64>(x);
+    // Prevent propagation for all input values less than 1.0.
+    // Note musl lib didn't fix this yet.
+    if (<i64>u < 0x3FF0000000000000) return (x - x) / 0.0;
+    var e = u >> 52 & 0x7FF;
     if (e < 0x3FF + 1) return log1p(x - 1 + builtin_sqrt<f64>((x - 1) * (x - 1) + 2 * (x - 1)));
     if (e < 0x3FF + 26) return log(2 * x - 1 / (x + builtin_sqrt<f64>(x * x - 1)));
     return log(x) + s;

tests/compiler/std/array.optimized.wat

@@ -4547,7 +4547,7 @@
   if
    i32.const 0
    i32.const 7264
-   i32.const 1417
+   i32.const 1421
    i32.const 5
    call $~lib/builtins/abort
    unreachable

tests/compiler/std/array.untouched.wat

@@ -6650,7 +6650,7 @@
   if
    i32.const 0
    i32.const 6240
-   i32.const 1417
+   i32.const 1421
    i32.const 5
    call $~lib/builtins/abort
    unreachable