vpred.h

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#ifndef _VPRED_H_
#define _VPRED_H_

#include <maloc/maloc_base.h>

/* random() prototype seems to be missing in <stdlib.h> */
/*
 * if !defined(VOSF1)
 *     extern long int random(void);
 * endif
 */

/* On some machines, the exact arithmetic routines might be defeated by the  */
/*   use of internal extended precision floating-point registers.  Sometimes */
/*   this problem can be fixed by defining certain values to be volatile,    */
/*   thus forcing them to be stored to memory and rounded off.  This isn't   */
/*   a great solution, though, as it slows the arithmetic down.              */
/*                                                                           */
/* To try this out, write "#define INEXACT volatile" below.  Normally,       */
/*   however, INEXACT should be defined to be nothing.  ("#define INEXACT".) */

#define INEXACT /* Nothing */
/* #define INEXACT volatile */

#define REAL double

#define REALPRINT doubleprint

#define REALRAND doublerand

#define NARROWRAND narrowdoublerand

#define UNIFORMRAND uniformdoublerand

void Vpred_exactinit(void);

REAL Vpred_orient2d(REAL *pa, REAL *pb, REAL *pc);

REAL Vpred_orient2dfast(REAL *pa, REAL *pb, REAL *pc);

REAL Vpred_orient2dexact(REAL *pa, REAL *pb, REAL *pc);

REAL Vpred_orient3d(REAL *pa, REAL *pb, REAL *pc, REAL *pd);

REAL Vpred_orient3dfast(REAL *pa, REAL *pb, REAL *pc, REAL *pd);

REAL Vpred_orient3dexact(REAL *pa, REAL *pb, REAL *pc, REAL *pd);

REAL Vpred_incircle(REAL *pa, REAL *pb, REAL *pc, REAL *pd);

REAL Vpred_incirclefast(REAL *pa, REAL *pb, REAL *pc, REAL *pd);

REAL Vpred_incircleexact(REAL *pa, REAL *pb, REAL *pc, REAL *pd);

REAL Vpred_insphere(REAL *pa, REAL *pb, REAL *pc, REAL *pd, REAL *pe);

REAL Vpred_inspherefast(REAL *pa, REAL *pb, REAL *pc, REAL *pd, REAL *pe);

REAL Vpred_insphereexact(REAL *pa, REAL *pb, REAL *pc, REAL *pd, REAL *pe);

#endif /* _VPRED_H_ */

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