Fix usage of numerical limits for init value of reduction

src/pystencils/backend/functions.py

@@ -100,8 +100,12 @@ class NumericLimitsFunctions(Enum):
     Each platform has to materialize these functions to a concrete implementation.
     """
 
-    min = ("min", 0)
-    max = ("max", 0)
+    Min = ("min", 0)
+    Max = ("max", 0)
+
+    def __init__(self, func_name, num_args):
+        self.function_name = func_name
+        self.num_args = num_args
 
 
 class PsMathFunction(PsFunction):

src/pystencils/backend/kernelcreation/freeze.py

@@ -206,10 +206,10 @@ class FreezeExpressions:
             # TODO: unsure if sp.Min & sp.Max are mapped by map_Min/map_Max afterwards
             case "min":
                 op = sp.Min
-                init_val = NumericLimitsFunctions("min")
+                init_val = PsCall(PsMathFunction(NumericLimitsFunctions.Min), [])
             case "max":
                 op = sp.Max
-                init_val = NumericLimitsFunctions("max")
+                init_val = PsCall(PsMathFunction(NumericLimitsFunctions.Max), [])
             case _:
                 raise FreezeError(f"Unsupported reduced assignment: {expr.op}.")
 

src/pystencils/backend/platforms/generic_cpu.py

@@ -62,7 +62,7 @@ class GenericCpu(Platform):
         dtype = call.get_dtype()
         arg_types = (dtype,) * func.num_args
 
-        if isinstance(dtype, PsScalarType) and func in (NumericLimitsFunctions.min, NumericLimitsFunctions.max):
+        if isinstance(dtype, PsScalarType) and func in (NumericLimitsFunctions.Min, NumericLimitsFunctions.Max):
             cfunc = CFunction(f"{dtype.c_string()}_{func.function_name}".capitalize(), arg_types, dtype)
             call.function = cfunc
             return call