License

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2018 smaludzi
+Copyright (c) 2018 Slawomir Maludzinski
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

libmath.c

@@ -120,4 +120,20 @@ void libmath_add_funcs(func_list * funcs)
     func_list_add_end(funcs, libmath_func_pow_new());
 }
 
+const char * libmath_func_to_str(libmath_func math_id)
+{
+    switch (math_id)
+    {
+        case LIB_MATH_UNKNOWN: return "unknown";
+        case LIB_MATH_SIN: return "sin";
+        case LIB_MATH_COS: return "cos";
+        case LIB_MATH_TAN: return "tan";
+        case LIB_MATH_EXP: return "exp";
+        case LIB_MATH_LOG: return "log";
+        case LIB_MATH_SQRT: return "sqrt";
+        case LIB_MATH_POW: return "pow";
+    }
+    return "unknown";
+}
+
 

libmath.h

@@ -34,5 +34,7 @@ func * libmath_func_sqrt_new();
 
 void libmath_add_funcs(func_list * funcs);
 
+const char * libmath_func_to_str(libmath_func math_id);
+
 #endif /* __LIBMATH_H__ */
 

sample/sample5.nev

@@ -4,14 +4,14 @@ func deg2rad(float deg) -> float
     return deg * 3.14159265359 / 180;
 }
 
-func trig() -> (float) -> float
+func get_func() -> (float) -> float
 {
     return cos;
 }
 
 func main() -> float
 {
-    return trig()(deg2rad(30));
+    return get_func()(deg2rad(60));
 }
 
 

vm.c

@@ -448,7 +448,9 @@ void vm_execute_build_in(vm * machine, bytecode * code)
 
     if (fetestexcept(FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW))
     {
-        print_error_msg(machine->line_no, "an error occurred in the mathematical function\n");
+        print_error_msg(machine->line_no,
+                        "an error occurred in build in function %s\n",
+                        libmath_func_to_str(code->build_in.id));
         machine->running = VM_ERROR;
         return;        
     }