stdlib inference bug fixed

lynglib/stdlib/lyng/root.lyng

@@ -121,9 +121,27 @@ extern class MapEntry<K,V> : Array<Object> {
 // - the remaining decimal cases currently use a temporary bridge:
 //   `Decimal -> Real -> host math -> Decimal`
 // - this is temporary and will be replaced with dedicated decimal implementations
-extern fun abs(x: Object): Object
-extern fun ln(x: Object): Object
-extern fun pow(x: Object, y: Object): Object
+extern fun abs<T>(x: T): T
+extern fun floor<T>(x: T): T
+extern fun ceil<T>(x: T): T
+extern fun round<T>(x: T): T
+extern fun sin(x: Object): Real
+extern fun cos(x: Object): Real
+extern fun tan(x: Object): Real
+extern fun asin(x: Object): Real
+extern fun acos(x: Object): Real
+extern fun atan(x: Object): Real
+extern fun sinh(x: Object): Real
+extern fun cosh(x: Object): Real
+extern fun tanh(x: Object): Real
+extern fun asinh(x: Object): Real
+extern fun acosh(x: Object): Real
+extern fun atanh(x: Object): Real
+extern fun exp(x: Object): Real
+extern fun ln(x: Object): Real
+extern fun log10(x: Object): Real
+extern fun log2(x: Object): Real
+extern fun pow(x: Object, y: Object): Real
 extern fun sqrt(x: Object): Real
 extern fun clamp<T>(value: T, range: Range<T>): T