fptan             936 src/ia32/assembler-ia32.h   void fptan();
fptan            2746 src/ia32/code-stubs-ia32.cc         __ fptan();
fptan            1299 src/x64/assembler-x64.h   void fptan();
fptan            1866 src/x64/code-stubs-x64.cc         __ fptan();