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# -*- coding: utf-8 -*-
#
# AWL data types helper functions
#
# Copyright 2013-2018 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 awlsim.common.cython_support cimport *
cdef extern from "<endian.h>": #@cy-posix
cdef extern from "endian-win.h": #@cy-win
enum: BYTE_ORDER
enum: LITTLE_ENDIAN
enum: BIG_ENDIAN
uint16_t htobe16(uint16_t)
uint16_t htole16(uint16_t)
uint16_t be16toh(uint16_t)
uint16_t le16toh(uint16_t)
uint32_t htobe32(uint32_t)
uint32_t htole32(uint32_t)
uint32_t be32toh(uint32_t)
uint32_t le32toh(uint32_t)
cdef extern from "<byteswap.h>": #@cy-posix
cdef extern from "byteswap-win.h": #@cy-win
uint16_t bswap_16(uint16_t)
uint32_t bswap_32(uint32_t)
cdef inline uint16_t swapEndianWord(uint16_t word):
return bswap_16(word)
cdef inline uint32_t swapEndianDWord(uint32_t dword):
return bswap_32(dword)
cdef inline int32_t byteToSignedPyInt(uint8_t byte):
return <int32_t>(<int8_t>byte)
cdef inline int32_t wordToSignedPyInt(uint16_t word):
return <int32_t>(<int16_t>word)
cdef inline int32_t dwordToSignedPyInt(uint32_t dword):
return <int32_t>dword
cdef inline int64_t qwordToSignedPyInt(uint64_t qword):
return <int64_t>qword
cdef union _floatCastUnion:
float fvalue
uint32_t value32
cdef uint32_t pyFloatToDWord(double pyfl)
cdef inline double dwordToPyFloat(uint32_t dword):
cdef _floatCastUnion u
u.value32 = dword
return <double>(u.fvalue)
cdef class FloatConst(object):
cdef public uint32_t minNormPosFloat32DWord
cdef public double minNormPosFloat32
cdef public uint32_t minNormNegFloat32DWord
cdef public double minNormNegFloat32
cdef public uint32_t maxNormNegFloat32DWord
cdef public double maxNormNegFloat32
cdef public uint32_t maxNormPosFloat32DWord
cdef public double maxNormPosFloat32
cdef public uint32_t posInfDWord
cdef public double posInfFloat
cdef public uint32_t negInfDWord
cdef public double negInfFloat
cdef public uint32_t pNaNDWord
cdef public uint32_t nNaNDWord
cdef public double nNaNFloat
cdef public uint32_t negZeroDWord
cdef public double epsilonFloat
cdef public FloatConst floatConst
cdef inline _Bool isNaN(uint32_t dword):
return (dword & 0x7FFFFFFFu) > 0x7F800000u
cdef inline _Bool isInf(uint32_t dword):
return (dword & 0x7FFFFFFFu) == 0x7F800000u
cdef inline _Bool isPosNegZero(uint32_t dword):
return (dword & 0x7FFFFFFFu) == 0u
cdef inline _Bool isDenormalPyFloat(double pyfl):
return ((pyfl > 0.0 and pyfl < floatConst.minNormPosFloat32) or
(pyfl < 0.0 and pyfl > floatConst.maxNormNegFloat32))
cdef inline _Bool pyFloatEqual(double pyfl0, double pyfl1):
return abs(pyfl0 - pyfl1) < floatConst.epsilonFloat
cdef _Bool floatEqual(object fl0, object fl1)
cdef inline uint32_t roundUp(uint32_t n, uint32_t s):
return ((n + s - 1u) // s) * s
cdef inline uint32_t intDivRoundUp(uint32_t n, uint32_t d):
return (n + d - 1u) // d
cdef uint32_t getMSB(uint32_t value)
cdef inline _Bool isInteger(object value):
#@cy3 return isinstance(value, int)
#@cy2 return isinstance(value, (int, long))
cdef inline _Bool isString(object value):
#@cy3 return isinstance(value, str)
#@cy2 return isinstance(value, (unicode, str))
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