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clipm_priv_math.h
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1 
2 /*********************************************************************
3  * E.S.O. - VLT project
4  *
5  * "@(#) $Id: clipm_priv_math.h 166626 2008-04-24 15:49:12Z hlorch $"
6  *
7  * Inline, non-public functions for basic mathematical operations
8  *
9  * who when what
10  * -------- ---------- ----------------------------------------------
11  * hlorch 2006-08-21 created
12  */
13 
28 #ifndef CLIPM_PRIV_MATH_H
29 #define CLIPM_PRIV_MATH_H
30 
31 /*-----------------------------------------------------------------------------
32  Includes
33  -----------------------------------------------------------------------------*/
34 
35 /*-----------------------------------------------------------------------------
36  Function Macros
37  -----------------------------------------------------------------------------*/
38 
39 /*----------------------------------------------------------------------------*/
46 /*----------------------------------------------------------------------------*/
47 #define clipm_priv_math_max(a, b) \
48  ((a) > (b) ? (a) : (b))
49 
50 /*----------------------------------------------------------------------------*/
57 /*----------------------------------------------------------------------------*/
58 #define clipm_priv_math_min(a, b) \
59  ((a) < (b) ? (a) : (b))
60 
61 /*----------------------------------------------------------------------------*/
67 /*----------------------------------------------------------------------------*/
68 #define clipm_priv_math_sign(in) \
69  ((in) >= 0 ? 1 : -1)
70 
71 /*-----------------------------------------------------------------------------
72  Declaration Block
73  -----------------------------------------------------------------------------*/
74 
75 #ifdef __cplusplus
76 extern "C" {
77 #endif
78 
79 /*----------------------------------------------------------------------------*/
87 /*----------------------------------------------------------------------------*/
88 #define clipm_priv_math_round_d2i(in) \
89  ((in < 0) ? (int)(in - 0.5) : (int)(in + 0.5))
90 
92 /*----------------------------------------------------------------------------*/
93 
94 #ifdef __cplusplus
95 } /* extern "C" */
96 #endif
97 
98 #endif /* CLIPM_PRIV_MATH_H */
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