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Remove log2 dependency when building against Android API-9 SDK

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Android's API-9 SDK is missing log2 builtins. A previous commit added
support for building against this API revision but this requires log2l
to be present.  (And it doesn't seem to be defined, despite being in
the headers.)

Author: pasaulais (Pierre-Andre Saulais)

Differential Revision: http://reviews.llvm.org/D9884



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238111 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vince Harron 2015-05-24 13:24:31 +00:00
parent 4064cb4762
commit 556ca517ab
1 changed files with 1 additions and 1 deletions
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include/llvm/Support/MathExtras.h
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@ -456,7 +456,7 @@ inline unsigned countPopulation(T Value) {
/// Log2 - This function returns the log base 2 of the specified value
inline double Log2(double Value) {
#if defined(__ANDROID_API__) && __ANDROID_API__ < 18
return (double)__builtin_log2l(Value);
return __builtin_log(Value) / __builtin_log(2.0);
#else
return log2(Value);
#endif