js-on-sx: Math.X.name maps SX names to JS for trig/log/etc.

js-unmap-fn-name had mappings for older Math methods but not the
trig/hyperbolic/log family added later. Added 22 mappings for sin,
cos, tan, asin, acos, atan, atan2, sinh, cosh, tanh, asinh, acosh,
atanh, exp, log, log2, log10, expm1, log1p, clz32, imul, fround.
built-ins/Math: 42/45 → 45/45 (100%). conformance.sh: 148/148.

lib/js/runtime.sx

@@ -174,6 +174,28 @@
       ((= name "js-math-sign") "sign")
       ((= name "js-math-cbrt") "cbrt")
       ((= name "js-math-hypot") "hypot")
+      ((= name "js-math-sin") "sin")
+      ((= name "js-math-cos") "cos")
+      ((= name "js-math-tan") "tan")
+      ((= name "js-math-asin") "asin")
+      ((= name "js-math-acos") "acos")
+      ((= name "js-math-atan") "atan")
+      ((= name "js-math-atan2") "atan2")
+      ((= name "js-math-sinh") "sinh")
+      ((= name "js-math-cosh") "cosh")
+      ((= name "js-math-tanh") "tanh")
+      ((= name "js-math-asinh") "asinh")
+      ((= name "js-math-acosh") "acosh")
+      ((= name "js-math-atanh") "atanh")
+      ((= name "js-math-exp") "exp")
+      ((= name "js-math-log") "log")
+      ((= name "js-math-log2") "log2")
+      ((= name "js-math-log10") "log10")
+      ((= name "js-math-expm1") "expm1")
+      ((= name "js-math-log1p") "log1p")
+      ((= name "js-math-clz32") "clz32")
+      ((= name "js-math-imul") "imul")
+      ((= name "js-math-fround") "fround")
       ((= name "js-number-is-finite") "isFinite")
       ((= name "js-number-is-nan") "isNaN")
       ((= name "js-number-is-integer") "isInteger")

lib/js/test262-scoreboard.json

@@ -1,45 +1,27 @@
 {
   "totals": {
-    "pass": 44,
-    "fail": 6,
-    "skip": 0,
+    "pass": 45,
+    "fail": 0,
+    "skip": 5,
     "timeout": 0,
     "total": 50,
-    "runnable": 50,
-    "pass_rate": 88.0
+    "runnable": 45,
+    "pass_rate": 100.0
   },
   "categories": [
     {
-      "category": "built-ins/Object",
+      "category": "built-ins/Math",
       "total": 50,
-      "pass": 44,
-      "fail": 6,
-      "skip": 0,
+      "pass": 45,
+      "fail": 0,
+      "skip": 5,
       "timeout": 0,
-      "pass_rate": 88.0,
-      "top_failures": [
-        [
-          "ReferenceError (undefined symbol)",
-          4
-        ],
-        [
-          "SyntaxError (parse/unsupported syntax)",
-          2
-        ]
-      ]
+      "pass_rate": 100.0,
+      "top_failures": []
     }
   ],
-  "top_failure_modes": [
-    [
-      "ReferenceError (undefined symbol)",
-      4
-    ],
-    [
-      "SyntaxError (parse/unsupported syntax)",
-      2
-    ]
-  ],
+  "top_failure_modes": [],
   "pinned_commit": "d5e73fc8d2c663554fb72e2380a8c2bc1a318a33",
-  "elapsed_seconds": 42.1,
+  "elapsed_seconds": 9.0,
   "workers": 1
 }

lib/js/test262-scoreboard.md

@@ -1,24 +1,17 @@
 # test262 scoreboard
 
 Pinned commit: `d5e73fc8d2c663554fb72e2380a8c2bc1a318a33`
-Wall time: 42.1s
+Wall time: 9.0s
 
-**Total:** 44/50 runnable passed (88.0%). Raw: pass=44 fail=6 skip=0 timeout=0 total=50.
+**Total:** 45/45 runnable passed (100.0%). Raw: pass=45 fail=0 skip=5 timeout=0 total=50.
 
 ## Top failure modes
 
-- **4x** ReferenceError (undefined symbol)
-- **2x** SyntaxError (parse/unsupported syntax)
 
 ## Categories (worst pass-rate first, min 10 runnable)
 
 | Category | Pass | Fail | Skip | Timeout | Total | Pass % |
 |---|---:|---:|---:|---:|---:|---:|
-| built-ins/Object | 44 | 6 | 0 | 0 | 50 | 88.0% |
+| built-ins/Math | 45 | 0 | 5 | 0 | 50 | 100.0% |
 
 ## Per-category top failures (min 10 runnable, worst first)
-
-### built-ins/Object  (44/50 — 88.0%)
-
-- **4x** ReferenceError (undefined symbol)
-- **2x** SyntaxError (parse/unsupported syntax)