# -*- coding: utf-8 -*-
#
# AWL simulator - instructions
#
# Copyright 2012-2018 Michael Buesch <m@bues.ch>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#

from __future__ import division, absolute_import, print_function, unicode_literals
#from awlsim.common.cython_support cimport * #@cy
from awlsim.common.compat import *

from awlsim.common.exceptions import *

from awlsim.common.datatypehelpers import * #+cimport

from awlsim.core.instructions.main import * #+cimport
from awlsim.core.operatortypes import * #+cimport
from awlsim.core.operators import * #+cimport


class AwlInsn_RNDN(AwlInsn): #+cdef

	__slots__ = ()

	def __init__(self, cpu, rawInsn=None, **kwargs):
		AwlInsn.__init__(self, cpu, AwlInsn.TYPE_RNDN, rawInsn, **kwargs)
		self.assertOpCount(0)

	def run(self): #+cdef
#@cy		cdef S7StatusWord s
#@cy		cdef double accu1
#@cy		cdef int64_t rounded
#@cy		cdef double roundedFloat

		s = self.cpu.statusWord
		accu1 = self.cpu.accu1.getPyFloat()
		if -2147483648.0 <= accu1 <= 2147483647.0: #+likely
			rounded = int(accu1) #@nocy
#@cy			rounded = <int64_t>(accu1)
			if accu1 < 0.0:
				roundedFloat = float(rounded) #@nocy
#@cy				roundedFloat = <double>(rounded)
				if pyFloatToDWord(roundedFloat) != pyFloatToDWord(accu1):
					rounded -= 1
			if -2147483648 <= rounded <= 2147483647: #+likely #+suffix-LL
				self.cpu.accu1.setDWord(rounded)
			else:
				s.OV, s.OS = 1, 1
		else:
			s.OV, s.OS = 1, 1
