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src/gallium/drivers/nouveau/codegen/nv50_ir_ra.cpp: prefix isinf with std::

Fabrice Fontaine requested to merge (removed):master into master

Prefix isinf with std:: to fix the following build failure with gcc 4.9:

../src/gallium/drivers/nouveau/codegen/nv50_ir_ra.cpp: In member function 'bool nv50_ir::GCRA::simplify()':
../src/gallium/drivers/nouveau/codegen/nv50_ir_ra.cpp:1350:29: error: 'isinf' was not declared in this scope
          if (isinf(bestScore)) {
                             ^
../src/gallium/drivers/nouveau/codegen/nv50_ir_ra.cpp:1350:29: note: suggested alternative:
In file included from /data/buildroot/buildroot-test/instance-0/output/host/opt/ext-toolchain/arm-buildroot-linux-uclibcgnueabi/include/c++/4.9.4/random:38:0,
                 from /data/buildroot/buildroot-test/instance-0/output/host/opt/ext-toolchain/arm-buildroot-linux-uclibcgnueabi/include/c++/4.9.4/bits/stl_algo.h:66,
                 from /data/buildroot/buildroot-test/instance-0/output/host/opt/ext-toolchain/arm-buildroot-linux-uclibcgnueabi/include/c++/4.9.4/algorithm:62,
                 from ../src/gallium/drivers/nouveau/codegen/nv50_ir_ra.cpp:26:
/data/buildroot/buildroot-test/instance-0/output/host/opt/ext-toolchain/arm-buildroot-linux-uclibcgnueabi/include/c++/4.9.4/cmath:621:5: note:   'std::isinf'
     isinf(_Tp __x)
     ^

Fixes:

Signed-off-by: Fabrice Fontaine fontaine.fabrice@gmail.com

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