Gabriele Cosmo
76 lines
1.8 KiB
Plaintext
76 lines
1.8 KiB
Plaintext
// Copyright (C) 2010, Guy Barrand. All rights reserved.
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// See the file tools.license for terms.
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#ifndef tools_platform
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#define tools_platform
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// We do not byteswap on intel (LE) (common platform).
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// We have then a better compression on these machines.
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// NOTE : this is the contrary to what is done in ROOT (and Rio).
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namespace tools {
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inline bool is_little_endian() {
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unsigned int i = 1;
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unsigned char* b = (unsigned char*)&i;
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// BE = Big Endian, LE = Little Endian.
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// The Intels x86 are LE.
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// Mac PPC b[3] is 1 (BE)
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// Mac Intel b[0] is 1 (LE)
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// Linux i386 b[0] is 1 (LE)
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// Linux x86_64 b[0] is 1 (LE)
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return (b[0]==1?true:false);
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}
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}
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#if defined(__APPLE__)
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#include <TargetConditionals.h>
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#endif
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namespace tools {
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namespace device {
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#if TARGET_OS_IPHONE
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inline bool is_iOS() {return true;}
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#else
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inline bool is_iOS() {return false;}
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#endif
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#if ANDROID_NDK
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inline bool is_Android() {return true;}
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#else
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inline bool is_Android() {return false;}
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#endif
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#if ANDROID_NDK || TARGET_OS_IPHONE
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inline bool small_screen() {return true;}
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inline bool no_cursor() {return true;}
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inline bool stop_app_button() {return true;}
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#else
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inline bool small_screen() {return false;}
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inline bool no_cursor() {return false;}
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inline bool stop_app_button() {return false;}
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#endif
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#if TARGET_OS_IPHONE
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inline bool slow_cpu() {return true;}
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#else
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inline bool slow_cpu() {return false;}
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#endif
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}}
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#endif
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/* We prefer to handle endianity dynamically, but with cpp macro
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it would looks like (from luaconf.h) :
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#if defined(__i386__) || defined(__i386) || \
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defined(__X86__) || defined (__x86_64)
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#define TOOLS_IS_BE 0
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#define TOOLS_IS_LE 1
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#elif defined(__POWERPC__) || defined(__ppc__)
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#define TOOLS_IS_BE 1
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#define TOOLS_IS_LE 0
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#endif
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*/
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