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ImfConvert.h
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34 
35 
36 #ifndef INCLUDED_IMF_CONVERT_H
37 #define INCLUDED_IMF_CONVERT_H
38 
39 //-----------------------------------------------------------------------------
40 //
41 // Routines for converting between pixel data types,
42 // with well-defined behavior for exceptional cases,
43 // without depending on how hardware and operating
44 // system handle integer overflows and floating-point
45 // exceptions.
46 //
47 //-----------------------------------------------------------------------------
48 
49 #include "half.h"
50 #include "ImfExport.h"
51 #include "ImfNamespace.h"
52 
54 
55 
56 //---------------------------------------------------------
57 // Conversion from half or float to unsigned int:
58 //
59 // input result
60 // ---------------------------------------------------
61 //
62 // finite, >= 0 input, cast to unsigned int
63 // (rounds towards zero)
64 //
65 // finite, < 0 0
66 //
67 // NaN 0
68 //
69 // +infinity UINT_MAX
70 //
71 // -infinity 0
72 //
73 //---------------------------------------------------------
74 
75 IMF_EXPORT unsigned int halfToUint (half h);
76 IMF_EXPORT unsigned int floatToUint (float f);
77 
78 
79 //---------------------------------------------------------
80 // Conversion from unsigned int or float to half:
81 //
82 // input result
83 // ---------------------------------------------------
84 //
85 // finite, closest possible half
86 // magnitude <= HALF_MAX
87 //
88 // finite, > HALF_MAX +infinity
89 //
90 // finite, < -HALF_MAX -infinity
91 //
92 // NaN NaN
93 //
94 // +infinity +infinity
95 //
96 // -infinity -infinity
97 //
98 //---------------------------------------------------------
99 
100 IMF_EXPORT half uintToHalf (unsigned int ui);
101 IMF_EXPORT half floatToHalf (float f);
102 
103 
105 
106 
107 #endif
#define OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_EXIT
Definition: ImfNamespace.h:109
GLfloat f
Definition: glcorearb.h:1925
#define IMF_EXPORT
Definition: ImfExport.h:59
GLfloat GLfloat GLfloat GLfloat h
Definition: glcorearb.h:2001
IMF_EXPORT half uintToHalf(unsigned int ui)
#define OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_ENTER
Definition: ImfNamespace.h:108
IMF_EXPORT unsigned int floatToUint(float f)
IMF_EXPORT half floatToHalf(float f)
Definition: half.h:91
OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_ENTER IMF_EXPORT unsigned int halfToUint(half h)