parse the value from the buffer given the interval for the appropraite bytes
        :param formattype:
        :param buff:
        :param start:
        :param end:

def parse_value(self, frmtcode, buff, start, end):
        '''
            parse the value from the buffer given the interval for the appropraite bytes
        :param formattype:
        :param buff:
        :param start:
        :param end:
        '''
        
        frmttype = self.util._formatmap[frmtcode]
        if(frmtcode == FormatType.FLOAT_32.value.code):  # @UndefinedVariable
            return self.parse_float32(buff, start, end)
        elif(frmtcode == FormatType.FLOAT_64.value.code):  # @UndefinedVariable
            return self.parse_float64(buff, start, end)
        if frmttype.value.idx <= FormatType.FIXSTR.value.idx:  # @UndefinedVariable  
            return self.parse_str(buff, start, end)
        elif frmttype.value.idx <= FormatType.INT_64.value.idx:  # @UndefinedVariable
            return self.parse_int(buff, start, end)
        elif frmttype.value.idx <= FormatType.UINT_64.value.idx:  # @UndefinedVariable
            return self.parse_uint(buff, start, end)