HCoop / bpt / guile.git / blame
| Commit | Line | Data |
|---|---|---|
| 3d458a81 | 1 | # isnan.m4 serial 5 |
| 5e69ceb7 | 2 | dnl Copyright (C) 2007-2014 Free Software Foundation, Inc. |
| 2e65b52f LC |
3 | dnl This file is free software; the Free Software Foundation |
| 4 | dnl gives unlimited permission to copy and/or distribute it, | |
| 5 | dnl with or without modifications, as long as this notice is preserved. | |
| 6 | ||
| 7 | AC_DEFUN([gl_ISNAN], | |
| 8 | [ | |
| 9 | AC_REQUIRE([gl_MATH_H_DEFAULTS]) | |
| 10 | AC_REQUIRE([gl_FUNC_ISNANF]) | |
| 11 | AC_REQUIRE([gl_FUNC_ISNAND]) | |
| 12 | AC_REQUIRE([gl_FUNC_ISNANL]) | |
| 13 | ||
| 14 | # If we replaced any of the underlying isnan* functions, replace | |
| 15 | # the isnan macro; it undoubtedly suffers from the same flaws. | |
| 16 | AC_MSG_CHECKING([whether isnan macro works]) | |
| 17 | if test $gl_func_isnanf = yes \ | |
| 18 | && test $gl_func_isnand = yes \ | |
| 19 | && test $gl_func_isnanl = yes; then | |
| 20 | AC_MSG_RESULT([yes]) | |
| 21 | ISNAN_LIBM= | |
| 22 | dnl Append $ISNANF_LIBM to ISNAN_LIBM, avoiding gratuitous duplicates. | |
| 23 | case " $ISNAN_LIBM " in | |
| 24 | *" $ISNANF_LIBM "*) ;; | |
| 25 | *) ISNAN_LIBM="$ISNAN_LIBM $ISNANF_LIBM" ;; | |
| 26 | esac | |
| 27 | dnl Append $ISNAND_LIBM to ISNAN_LIBM, avoiding gratuitous duplicates. | |
| 28 | case " $ISNAN_LIBM " in | |
| 29 | *" $ISNAND_LIBM "*) ;; | |
| 30 | *) ISNAN_LIBM="$ISNAN_LIBM $ISNAND_LIBM" ;; | |
| 31 | esac | |
| 32 | dnl Append $ISNANL_LIBM to ISNAN_LIBM, avoiding gratuitous duplicates. | |
| 33 | case " $ISNAN_LIBM " in | |
| 34 | *" $ISNANL_LIBM "*) ;; | |
| 35 | *) ISNAN_LIBM="$ISNAN_LIBM $ISNANL_LIBM" ;; | |
| 36 | esac | |
| 37 | else | |
| 38 | AC_MSG_RESULT([no]) | |
| 3d458a81 | 39 | dnl REPLACE_ISNAN=1 also makes sure the rpl_isnan[fdl] functions get built. |
| 2e65b52f | 40 | REPLACE_ISNAN=1 |
| 2e65b52f LC |
41 | ISNAN_LIBM= |
| 42 | fi | |
| 43 | AC_SUBST([ISNAN_LIBM]) | |
| 44 | ]) |