2 logbf() function: get exponent.
13 isfinite [test $HAVE_LOGBF = 0 || test $REPLACE_LOGBF = 1]
14 frexpf [test $HAVE_LOGBF = 0 || test $REPLACE_LOGBF = 1]
15 isnanf [test $HAVE_LOGBF = 0 || test $REPLACE_LOGBF = 1]
19 if test $HAVE_LOGBF = 0 || test $REPLACE_LOGBF = 1; then
22 gl_MATH_MODULE_INDICATOR([logbf])