31 lines
1.1 KiB
C
31 lines
1.1 KiB
C
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/************************************************************************
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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************************************************************************/
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#define FIXSHIFT 16
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#define FIXONE (1l << FIXSHIFT)
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#define SGN(x) ((x)>0?1:-1)
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#define ABS(x) ((int)(x)>0?(x):-(x))
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#define LABS(x) ((long)(x)>0?(x):-(x))
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#define fixed long
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extern long lshr6(long);
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extern long lshl6(long);
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extern long lshr8(long);
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extern long lshl8(long);
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extern int lshr16(fixed);
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extern fixed lshl16(int);
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extern fixed fixmul(fixed,fixed);
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extern fixed fixdiv(fixed,fixed);
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extern fixed fixdiv64(fixed a_l,fixed a_h, fixed b);
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extern fixed fixdiv64shl16(fixed a, fixed b);
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extern fixed fixmuldiv64(fixed a, fixed b, fixed c);
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extern fixed fixsqrt(fixed a);
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extern fixed fixdist(fixed dx, fixed dy);
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extern int intdist(int dex, int dey);
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