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author | dan miller | 2007-10-19 05:15:33 +0000 |
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committer | dan miller | 2007-10-19 05:15:33 +0000 |
commit | 79eca25c945a535a7a0325999034bae17da92412 (patch) | |
tree | 40ff433d94859d629aac933d5ec73b382f62ba1a /libraries/ode-0.9/OPCODE/Ice/IceUtils.cpp | |
parent | adding ode source to /libraries (diff) | |
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resubmitting ode
Diffstat (limited to 'libraries/ode-0.9/OPCODE/Ice/IceUtils.cpp')
-rw-r--r-- | libraries/ode-0.9/OPCODE/Ice/IceUtils.cpp | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/libraries/ode-0.9/OPCODE/Ice/IceUtils.cpp b/libraries/ode-0.9/OPCODE/Ice/IceUtils.cpp new file mode 100644 index 0000000..29b6c57 --- /dev/null +++ b/libraries/ode-0.9/OPCODE/Ice/IceUtils.cpp | |||
@@ -0,0 +1,39 @@ | |||
1 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
2 | /** | ||
3 | * Contains misc. useful macros & defines. | ||
4 | * \file IceUtils.cpp | ||
5 | * \author Pierre Terdiman (collected from various sources) | ||
6 | * \date April, 4, 2000 | ||
7 | */ | ||
8 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
9 | |||
10 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
11 | // Precompiled Header | ||
12 | #include "Stdafx.h" | ||
13 | |||
14 | using namespace IceCore; | ||
15 | |||
16 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
17 | /** | ||
18 | * Returns the alignment of the input address. | ||
19 | * \fn Alignment() | ||
20 | * \param address [in] address to check | ||
21 | * \return the best alignment (e.g. 1 for odd addresses, etc) | ||
22 | */ | ||
23 | /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||
24 | udword IceCore::Alignment(udword address) | ||
25 | { | ||
26 | // Returns 0 for null addresses | ||
27 | if(!address) return 0; | ||
28 | |||
29 | // Test all bits | ||
30 | udword Align = 1; | ||
31 | for(udword i=1;i<32;i++) | ||
32 | { | ||
33 | // Returns as soon as the alignment is broken | ||
34 | if(address&Align) return Align; | ||
35 | Align<<=1; | ||
36 | } | ||
37 | // Here all bits are null, except the highest one (else the address would be null) | ||
38 | return Align; | ||
39 | } | ||