- AC_CHECK_DECLS([ceill, floorl], , , [#include <math.h>])
- if test "$ac_cv_have_decl_floorl" = yes \
- && test "$ac_cv_have_decl_ceill" = yes; then
- gl_FUNC_FLOORL_LIBS
- gl_FUNC_CEILL_LIBS
- if test "$FLOORL_LIBM" != '?' && test "$CEILL_LIBM" != '?'; then
- AC_DEFINE([HAVE_FLOORL_AND_CEILL], [1],
- [Define if the both the floorl() and ceill() functions exist.])
- ROUNDL_LIBM=
- dnl Append $FLOORL_LIBM to ROUNDL_LIBM, avoiding gratuitous duplicates.
- case " $ROUNDL_LIBM " in
- *" $FLOORL_LIBM "*) ;;
- *) ROUNDL_LIBM="$ROUNDL_LIBM $FLOORL_LIBM" ;;
- esac
- dnl Append $CEILL_LIBM to ROUNDL_LIBM, avoiding gratuitous duplicates.
- case " $ROUNDL_LIBM " in
- *" $CEILL_LIBM "*) ;;
- *) ROUNDL_LIBM="$ROUNDL_LIBM $CEILL_LIBM" ;;
- esac
+ if test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1; then
+ AC_REQUIRE([gl_FUNC_ROUND])
+ ROUNDL_LIBM="$ROUND_LIBM"
+ else
+ AC_CHECK_DECLS([ceill, floorl], , , [[#include <math.h>]])
+ if test "$ac_cv_have_decl_floorl" = yes \
+ && test "$ac_cv_have_decl_ceill" = yes; then
+ gl_FUNC_FLOORL_LIBS
+ gl_FUNC_CEILL_LIBS
+ if test "$FLOORL_LIBM" != '?' && test "$CEILL_LIBM" != '?'; then
+ AC_DEFINE([HAVE_FLOORL_AND_CEILL], [1],
+ [Define if the both the floorl() and ceill() functions exist.])
+ ROUNDL_LIBM=
+ dnl Append $FLOORL_LIBM to ROUNDL_LIBM, avoiding gratuitous duplicates.
+ case " $ROUNDL_LIBM " in
+ *" $FLOORL_LIBM "*) ;;
+ *) ROUNDL_LIBM="$ROUNDL_LIBM $FLOORL_LIBM" ;;
+ esac
+ dnl Append $CEILL_LIBM to ROUNDL_LIBM, avoiding gratuitous duplicates.
+ case " $ROUNDL_LIBM " in
+ *" $CEILL_LIBM "*) ;;
+ *) ROUNDL_LIBM="$ROUNDL_LIBM $CEILL_LIBM" ;;
+ esac
+ else
+ ROUNDL_LIBM=
+ fi