pow2d             243 gnulib-tests/test-float.c         volatile double pow2_n = pow2d (n); /* 2^n */
pow2d             255 gnulib-tests/test-float.c     volatile double x = pow2d (DBL_MIN_EXP - 1);
pow2d             270 gnulib-tests/test-float.c         volatile double half_n = pow2d (- n); /* 2^-n */