2 exp2() function: exponential base 2 function.
12 isnand [test $HAVE_EXP2 = 0 || test $REPLACE_EXP2 = 1]
13 round [test $HAVE_EXP2 = 0 || test $REPLACE_EXP2 = 1]
14 ldexp [test $HAVE_EXP2 = 0 || test $REPLACE_EXP2 = 1]
18 if test $HAVE_EXP2 = 0 || test $REPLACE_EXP2 = 1; then
21 gl_MATH_MODULE_INDICATOR([exp2])