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DiskIO.cpp
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executable file
·240 lines (199 loc) · 3.36 KB
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/*
Copyright (C) 2010 Matthew Baranowski, Sander van Rossen & Raven software.
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "system.h"
#include "diskio.h"
void putLittle16 ( INT16 num , FILE *f )
{
union
{
struct
{
UINT8 b1, b2;
};
UINT16 i1;
} u;
u.i1 = num;
fputc( u.b1, f );
fputc( u.b2, f );
}
INT16 getLittle16 (FILE *f)
{
union
{
struct
{
UINT8 b1, b2;
};
UINT16 i1;
} u;
u.b1 = fgetc(f);
u.b2 = fgetc(f);
return u.i1;
}
void putLittle32 ( INT32 num , FILE *f )
{
union
{
struct
{
UINT8 b1, b2, b3, b4;
};
UINT32 i1;
} u;
u.i1 = num;
fputc( u.b1, f );
fputc( u.b2, f );
fputc( u.b3, f );
fputc( u.b4, f );
}
INT32 getLittle32 (FILE *f)
{
union
{
struct
{
UINT8 b1, b2, b3, b4;
};
UINT32 i1;
} u;
u.b1 = fgetc(f);
u.b2 = fgetc(f);
u.b3 = fgetc(f);
u.b4 = fgetc(f);
return u.i1;
}
void putLittleFloat( float num , FILE *f )//32bit floating point number
{
union
{
struct
{
UINT8 b1, b2, b3, b4;
};
float f1;
} u;
u.f1 = num;
fputc( u.b1, f );
fputc( u.b2, f );
fputc( u.b3, f );
fputc( u.b4, f );
}
float getLittleFloat (FILE *f) //32bit floating point number
{
union
{
struct
{
UINT8 b1, b2, b3, b4;
};
float f1;
} u;
u.b1 = fgetc(f);
u.b2 = fgetc(f);
u.b3 = fgetc(f);
u.b4 = fgetc(f);
return u.f1;
}
void putBig16 ( INT16 num , FILE *f )
{
union
{
struct
{
UINT8 b1, b2, b3, b4;
};
INT16 i1;
} u;
u.i1 = num;
fputc( u.b2, f );
fputc( u.b1, f );
}
INT16 getBig16 (FILE *f)
{
union
{
struct
{
UINT8 b1, b2;
};
UINT16 i1;
} u;
u.b2 = fgetc(f);
u.b1 = fgetc(f);
return u.i1;
}
void putBig32 ( INT32 num , FILE *f )
{
union
{
struct
{
UINT8 b1, b2, b3, b4;
};
INT32 i1;
} u;
u.i1 = num;
fputc( u.b4, f );
fputc( u.b3, f );
fputc( u.b2, f );
fputc( u.b1, f );
}
INT32 getBig32 (FILE *f)
{
union
{
struct
{
UINT8 b1, b2, b3, b4;
};
UINT32 i1;
} u;
u.b4 = fgetc(f);
u.b3 = fgetc(f);
u.b2 = fgetc(f);
u.b1 = fgetc(f);
return u.i1;
}
void putBigFloat ( float num , FILE *f ) //32bit floating point number
{
union
{
struct
{
UINT8 b1, b2, b3, b4;
};
float f1;
} u;
u.f1 = num;
fputc( u.b4, f );
fputc( u.b3, f );
fputc( u.b2, f );
fputc( u.b1, f );
}
float getBigFloat (FILE *f) //32bit floating point number
{
union
{
struct
{
UINT8 b1, b2, b3, b4;
};
float f1;
} u;
u.b4 = fgetc(f);
u.b3 = fgetc(f);
u.b2 = fgetc(f);
u.b1 = fgetc(f);
return u.f1;
}