google3/third_party/grte/v4_src/glibc-2.19/sysdeps/x86_64/fpu/multiarch/s_tan-fma4.c

#define tan __tan_fma4
#define __dbl_mp __dbl_mp_fma4
#define __mpranred __mpranred_fma4
#define __mptan __mptan_fma4
#define __sub __sub_fma4
#define SECTION __attribute__ ((section (".text.fma4")))

#include <sysdeps/ieee754/dbl-64/s_tan.c>