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馃悰 Open binary AIGER files in binary mode #709

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馃悰 Open binary AIGER files in binary mode #709

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4 changes: 2 additions & 2 deletions include/mockturtle/io/write_aiger.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -281,9 +281,9 @@ inline void write_aiger( Ntk const& aig, std::ostream& os )
template<typename Ntk>
inline void write_aiger( Ntk const& aig, std::string const& filename )
{
std::ofstream os( filename.c_str(), std::ofstream::out );
std::ofstream os( filename.c_str(), std::ofstream::out | std::ofstream::binary );
write_aiger( aig, os );
os.close();
}

} /* namespace mockturtle */
} /* namespace mockturtle */
39 changes: 39 additions & 0 deletions test/io/write_aiger.cpp
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Expand Up @@ -8,8 +8,12 @@

#include <lorina/aiger.hpp>

#include <cstdio>
#include <fstream>
#include <iterator>
#include <sstream>
#include <string>
#include <vector>

template<
typename T,
Expand Down Expand Up @@ -70,6 +74,41 @@ TEST_CASE( "write single-gate AIG into AIGER file", "[write_aiger]" )
} );
}

TEST_CASE( "write binary AIGER into a file", "[write_aiger]" )
{
aig_network aig;

std::vector<aig_network::signal> pis;
for ( auto i = 0u; i < 6u; ++i )
{
pis.push_back( aig.create_pi() );
}

aig.create_po( aig.create_and( pis[0], pis[1] ) );

std::string const filename = "write_aiger_binary.aig";
write_aiger( aig, filename );

std::ifstream in( filename, std::ifstream::in | std::ifstream::binary );
REQUIRE( in.is_open() );
std::vector<char> const data{ std::istreambuf_iterator<char>{ in }, std::istreambuf_iterator<char>{} };
in.close();
CHECK( std::remove( filename.c_str() ) == 0 );

CHECK( data ==
std::vector<char>{
0x61, 0x69, 0x67, 0x20, // aig
0x37, 0x20, // M=7 (I+L+A)
0x36, 0x20, // I=6
0x30, 0x20, // L=0
0x31, 0x20, // O=1
0x31, 0x0a, // A=1
0x31, 0x34, 0x0a, // 1 PO
0x0a, 0x02, // 1 AND gate
0x63 // comment
} );
}

TEST_CASE( "write AIG for XOR into AIGERfile", "[write_aiger]" )
{
aig_network aig;
Expand Down
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