+ ISNAN_LIBM=
+ dnl Append $ISNANF_LIBM to ISNAN_LIBM, avoiding gratuitous duplicates.
+ case " $ISNAN_LIBM " in
+ *" $ISNANF_LIBM "*) ;;
+ *) ISNAN_LIBM="$ISNAN_LIBM $ISNANF_LIBM" ;;
+ esac
+ dnl Append $ISNAND_LIBM to ISNAN_LIBM, avoiding gratuitous duplicates.
+ case " $ISNAN_LIBM " in
+ *" $ISNAND_LIBM "*) ;;
+ *) ISNAN_LIBM="$ISNAN_LIBM $ISNAND_LIBM" ;;
+ esac
+ dnl Append $ISNANL_LIBM to ISNAN_LIBM, avoiding gratuitous duplicates.
+ case " $ISNAN_LIBM " in
+ *" $ISNANL_LIBM "*) ;;
+ *) ISNAN_LIBM="$ISNAN_LIBM $ISNANL_LIBM" ;;
+ esac