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- dnl acinclude.m4. Change *this* file to add new or change macros.
- dnl When changes have been made, delete aclocal.m4 and run
- dnl "aclocal".
- dnl
- dnl DO NOT change aclocal.m4 !
- dnl
-
- dnl * LA_SEARCH_FILE(variable, filename, PATH)
- dnl * Search "filename" in the specified "PATH", "variable" will
- dnl * contain the full pathname or the empty string
- dnl * PATH is space-separated list of directories.
- dnl * by Florian Bomers
-
- AC_DEFUN(LA_SEARCH_FILE,[
- $1=
- dnl hack: eliminate line feeds in $2
- for FILE in $2; do
- for DIR in $3; do
- dnl use PATH in order
- if test ".$1"="." && test -f "$DIR/$FILE"; then
- $1=$DIR
- fi
- done
- done
- ])
-
- dnl * LA_SEARCH_LIB(lib-variable, include-variable, lib-filename, header-filename, prefix)
- dnl * looks for "lib-filename" and "header-filename" in the area of "prefix".
- dnl * if found, "lib-variable" and "include-variable" are set to the
- dnl * respective paths.
- dnl * prefix is a single path
- dnl * libs are searched in prefix, prefix/lib, prefix/.., prefix/../lib
- dnl * headers are searched in prefix, prefix/include, prefix/.., prefix/../include
- dnl *
- dnl * If one of them is not found, both "lib-variable", "include-variable" are
- dnl * set to the empty string.
- dnl *
- dnl * TODO: assert function call to verify lib
- dnl *
- dnl * by Florian Bomers
-
- AC_DEFUN(LA_SEARCH_LIB,[
- dnl look for lib
- LA_SEARCH_FILE($1, $3, $5 $5/lib $5/.. $5/../lib)
- dnl look for header.
- LA_SEARCH_FILE($2, $4, $5 $5/include $5/.. $5/../include)
- if test ".$1" = "." || test ".$2" = "."; then
- $1=
- $2=
- fi
- ])
-
-
-
-
- # alex_IEEE854_FLOAT80
- # ------------
- AC_DEFUN(alex_IEEE854_FLOAT80,
- [AC_CACHE_CHECK(for IEEE854 compliant 80 bit floats, alex_cv_ieee854_float80,
- [AC_TRY_RUN([
- int float2long_IEEE_compliance ( void )
- {
- float f;
- f = 12582912.; if ( *(long*)(&f) != 1262485504l ) return 0;
- f = 12615679.; if ( *(long*)(&f) != 1262518271l ) return 0;
- f = 13582912.; if ( *(long*)(&f) != 1263485504l ) return 0;
- f = 12550145.; if ( *(long*)(&f) != 1262452737l ) return 0;
- f = 11582912.; if ( *(long*)(&f) != 1261485504l ) return 0;
- return 1;
- }
-
- int main(void)
- {
- int retval;
-
- retval = float2long_IEEE_compliance();
-
- /* no error return -> success */
- return !retval;
- }
- ], alex_cv_ieee854_float80=yes, alex_cv_ieee854_float80=no,
- [AC_MSG_WARN(can't check for IEEE854 compliant 80 bit floats)]
- )])]) # alex_IEEE854_FLOAT80
-
-
-