tnumber_mathfuncs.h

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#ifndef __TEMPORAL_MATHFUNCS_H__
#define __TEMPORAL_MATHFUNCS_H__
 
/* PostgreSQL */
#include <postgres.h>
/* PostgreSQL */
#include "general/temporal.h"
 
/*****************************************************************************/
 
typedef enum
{
  ADD,
  SUB,
  MULT,
  DIV,
  DIST,
} TArithmetic;
 
/*****************************************************************************/
 
extern bool tnumber_mult_tp_at_timestamp(const TInstant *start1,
  const TInstant *end1, const TInstant *start2, const TInstant *end2,
  Datum *value, TimestampTz *t);
extern bool tnumber_div_tp_at_timestamp(const TInstant *start1,
  const TInstant *end1, const TInstant *start2, const TInstant *end2,
  Datum *value, TimestampTz *t);
 
extern Temporal *arithop_tnumber_number(const Temporal *temp, Datum value,
  meosType basetype, TArithmetic oper,
  Datum (*func)(Datum, Datum, meosType, meosType), bool invert);
extern Temporal *arithop_tnumber_tnumber(const Temporal *temp1,
  const Temporal *temp2, TArithmetic oper,
  Datum (*func)(Datum, Datum, meosType, meosType),
  bool (*tpfunc)(const TInstant *, const TInstant *, const TInstant *,
    const TInstant *, Datum *, TimestampTz *));
 
extern TSequence *tfloatseq_derivative(const TSequence *seq);
extern TSequenceSet *tfloatseqset_derivative(const TSequenceSet *ts);
 
/*****************************************************************************/
 
#endif