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Comment:Templates allow return types to differ from arguments.
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SHA3-256: 24dfa443fc7bd2790e2d7e4895a5bdac07b178fb266a1ee4bf2a0ae0d6145209
User & Date: geraint@users.sourceforge.net on 2001-04-23 22:28:06
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Context
2001-04-24
16:39:36
Uses new 2-port sR and sC check-in: 29b09bdf62 user: gawthrop@users.sourceforge.net tags: origin/master, trunk
2001-04-23
22:28:06
Templates allow return types to differ from arguments. check-in: 24dfa443fc user: geraint@users.sourceforge.net tags: origin/master, trunk
22:25:29
Plots each column individually. check-in: 75eb8f868e user: geraint@users.sourceforge.net tags: origin/master, trunk
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Modified mttroot/mtt/cc/include/useful-functions.hh from [37750f990b] to [1c223463ca]. 

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#define pi 3.14159 // Predefine pi

#ifndef HAVE_USEFUL_FUNCTIONS_HH
#define HAVE_USEFUL_FUNCTIONS_HH


#ifdef __CPLUSPLUS
template <class return_t>
template <class class_t>
typedef class_t &classref_t;
#else
#define inline			// strip from pre-processed file
#define return_t double
#define class_t double
#define class_t  double
typedef class_t  classref_t;
#endif // __CPLUSPLUS

#ifndef MTT_UNUSED
#ifdef __GNUC__
#define MTT_UNUSED __attribute__ ((unused))
#else
#define MTT_UNUSED
#endif // __GNUC__
#endif // MTT_UNUSED

// == Template functions ==


static inline class_t max (const class_t &x1, const class_t &x2) MTT_UNUSED;
static inline class_t min (const class_t &x1, const class_t &x2) MTT_UNUSED;
static inline class_t sign (const class_t &x) MTT_UNUSED;
// == Declarations ==

// - Template functions -

static inline return_t max         (const classref_t x1, const classref_t x2) MTT_UNUSED;
static inline return_t min         (const classref_t x1, const classref_t x2) MTT_UNUSED;
class_t
max (const class_t &x1, const class_t &x2)
{
static inline return_t nonsingular (const classref_t x) MTT_UNUSED;
static inline return_t sign        (const classref_t x) MTT_UNUSED;

  return ((x1 >= x2) ? x1 : (x1 < x2) ? x2 : 0);
}
// - Octave functions -
#ifdef __CPLUSPLUS
static inline Matrix	   ones    (const int r = 1, const int c = 1) MTT_UNUSED;
static inline ColumnVector nozeros (const ColumnVector v0, const double tol = 0.0) MTT_UNUSED;
static inline ColumnVector zeros   (const int r) MTT_UNUSED;
static inline Matrix 	   zeros   (const int r, const int c) MTT_UNUSED;
#endif // __CPLUSPLUS


class_t
min (const class_t &x1, const class_t &x2)
{

  return ((x1 <= x2) ? x1 : (x1 > x2) ? x2 : 0);
}
// == Defininitions ==

// - Template functions -

class_t
sign (const class_t &x)
static inline return_t
max (const classref_t x1, const classref_t x2)
{
  return ((x > 0) ? +1 : (x < 0) ? -1 : 0);
  return static_cast<return_t>((x1 >= x2) ? x1 : (x1 < x2) ? x2 : 0);
}

static inline return_t
min (const classref_t x1, const classref_t x2)

{
// == Octave functions ==

static inline Matrix ones (const int r = 1, const int c = 1) MTT_UNUSED;
static inline ColumnVector nozeros (const ColumnVector v0, const double tol = 0.0) MTT_UNUSED;
static inline ColumnVector zeros (const int r) MTT_UNUSED;
static inline Matrix zeros (const int r, const int c) MTT_UNUSED;
  return static_cast<return_t>((x1 <= x2) ? x1 : (x1 > x2) ? x2 : 0);
}

static inline return_t
nonsingular (const classref_t x)
{
  return static_cast<return_t>((x == 0) ? 1.0e-30 : x);
}

static inline return_t
sign (const classref_t x)
{
  return static_cast<return_t>((x > 0) ? +1 : (x < 0) ? -1 : 0);
}


// - Octave functions -
#ifdef __CPLUSPLUS
Matrix
ones (const int r = 1, const int c = 1)
{
  Matrix m (r, c, 1.0);
  return m;
}
︙
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Matrix
zeros (const int r, const int c)
{
  Matrix m (r, c, 0.0);
  return m;
}
#endif __CPLUSPLUS



#endif // HAVE_USEFUL_FUNCTIONS_HH

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