Removed unused "use_float_constants" from C backend

- constants are typed - no need any more for this parameter

backends/cbackend.py

@@ -10,14 +10,14 @@ except ImportError:
 
 from pystencils.integer_functions import bitwise_xor, bit_shift_right, bit_shift_left, bitwise_and, \
     bitwise_or, modulo_floor, modulo_ceil
-from pystencils.astnodes import Node, ResolvedFieldAccess, KernelFunction
+from pystencils.astnodes import Node, KernelFunction
 from pystencils.data_types import create_type, PointerType, get_type_of_expression, VectorType, cast_func, \
     vector_memory_access
 
 __all__ = ['generate_c', 'CustomCppCode', 'PrintNode', 'get_headers', 'CustomSympyPrinter']
 
 
-def generate_c(ast_node: Node, signature_only: bool = False, use_float_constants: Optional[bool] = None) -> str:
+def generate_c(ast_node: Node, signature_only: bool = False) -> str:
     """Prints an abstract syntax tree node as C or CUDA code.
 
     This function does not need to distinguish between C, C++ or CUDA code, it just prints 'C-like' code as encoded
@@ -27,17 +27,11 @@ def generate_c(ast_node: Node, signature_only: bool = False, use_float_constants
     Args:
         ast_node:
         signature_only:
-        use_float_constants:
 
     Returns:
         C-like code for the ast node and its descendants
     """
-    if use_float_constants is None:
-        field_types = set(o.field.dtype for o in ast_node.atoms(ResolvedFieldAccess))
-        double = create_type('double')
-        use_float_constants = double not in field_types
-
-    printer = CBackend(constants_as_floats=use_float_constants, signature_only=signature_only,
+    printer = CBackend(signature_only=signature_only,
                        vector_instruction_set=ast_node.instruction_set)
     return printer(ast_node)
 
@@ -100,13 +94,13 @@ class PrintNode(CustomCppCode):
 # noinspection PyPep8Naming
 class CBackend:
 
-    def __init__(self, constants_as_floats=False, sympy_printer=None,
+    def __init__(self, sympy_printer=None,
                  signature_only=False, vector_instruction_set=None):
         if sympy_printer is None:
             if vector_instruction_set is not None:
-                self.sympy_printer = VectorizedCustomSympyPrinter(vector_instruction_set, constants_as_floats)
+                self.sympy_printer = VectorizedCustomSympyPrinter(vector_instruction_set)
             else:
-                self.sympy_printer = CustomSympyPrinter(constants_as_floats)
+                self.sympy_printer = CustomSympyPrinter()
         else:
             self.sympy_printer = sympy_printer
 
@@ -211,8 +205,7 @@ class CBackend:
 # noinspection PyPep8Naming
 class CustomSympyPrinter(CCodePrinter):
 
-    def __init__(self, constants_as_floats=False):
-        self._constantsAsFloats = constants_as_floats
+    def __init__(self):
         super(CustomSympyPrinter, self).__init__()
         self._float_type = create_type("float32")
 
@@ -280,8 +273,8 @@ class CustomSympyPrinter(CCodePrinter):
 class VectorizedCustomSympyPrinter(CustomSympyPrinter):
     SummandInfo = namedtuple("SummandInfo", ['sign', 'term'])
 
-    def __init__(self, instruction_set, constants_as_floats=False):
-        super(VectorizedCustomSympyPrinter, self).__init__(constants_as_floats)
+    def __init__(self, instruction_set):
+        super(VectorizedCustomSympyPrinter, self).__init__()
         self.instruction_set = instruction_set
 
     def _scalarFallback(self, func_name, expr, *args, **kwargs):