exp2               37 maint/gnulib/lib/exp2.c exp2 (double x)
exp2              715 maint/gnulib/lib/math.in.h #   undef exp2
exp2              716 maint/gnulib/lib/math.in.h #   define exp2 rpl_exp2
exp2              730 maint/gnulib/lib/math.in.h # undef exp2