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#ifdef HAVE_FMA4_SUPPORT # include <init-arch.h> # include <math.h> extern double __tan_sse2 (double); extern double __tan_fma4 (double); libm_ifunc (tan, HAS_FMA4 ? __tan_fma4 : __tan_sse2); # define tan __tan_sse2 #endif #include <sysdeps/ieee754/dbl-64/s_tan.c>