Added minmax gnulib module.

5 files changed, 117 insertions, 2 deletions

diff --git a/lib/gllib/Makefile.am b/lib/gllib/Makefile.am
index 19e9881..96932d1 100644
--- a/lib/gllib/Makefile.am
+++ b/lib/gllib/Makefile.am
@@ -21,7 +21,7 @@
 # the same distribution terms as the rest of that program.
 #
 # Generated by gnulib-tool.
-# Reproduce by: gnulib-tool --import --dir=. --lib=libgnu --source-base=lib/gllib --m4-base=lib/glm4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --lgpl=2 --no-conditional-dependencies --libtool --macro-prefix=lgl --no-vc-files hash-pjw-bare intprops lib-symbol-versions lib-symbol-visibility stdint strverscmp
+# Reproduce by: gnulib-tool --import --dir=. --lib=libgnu --source-base=lib/gllib --m4-base=lib/glm4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --lgpl=2 --no-conditional-dependencies --libtool --macro-prefix=lgl --no-vc-files hash-pjw-bare intprops lib-symbol-versions lib-symbol-visibility minmax stdint strverscmp
 
 AUTOMAKE_OPTIONS = 1.9.6 gnits
 
@@ -82,6 +82,12 @@ AM_CFLAGS += $(CFLAG_VISIBILITY)
 
 ## end   gnulib module lib-symbol-visibility
 
+## begin gnulib module minmax
+
+libgnu_la_SOURCES += minmax.h
+
+## end   gnulib module minmax
+
 ## begin gnulib module snippet/arg-nonnull
 
 # The BUILT_SOURCES created by this Makefile snippet are not used via #include
diff --git a/lib/gllib/minmax.h b/lib/gllib/minmax.h
new file mode 100644
index 0000000..5a763f8
--- /dev/null
+++ b/lib/gllib/minmax.h
@@ -0,0 +1,60 @@
+/* MIN, MAX macros.
+   Copyright (C) 1995, 1998, 2001, 2003, 2005, 2009-2014 Free Software
+   Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as published by
+   the Free Software Foundation; either version 2.1, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program; if not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _MINMAX_H
+#define _MINMAX_H
+
+/* Note: MIN, MAX are also defined in <sys/param.h> on some systems
+   (glibc, IRIX, HP-UX, OSF/1).  Therefore you might get warnings about
+   MIN, MAX macro redefinitions on some systems; the workaround is to
+   #include this file as the last one among the #include list.  */
+
+/* Before we define the following symbols we get the <limits.h> file
+   since otherwise we get redefinitions on some systems if <limits.h> is
+   included after this file.  Likewise for <sys/param.h>.
+   If more than one of these system headers define MIN and MAX, pick just
+   one of the headers (because the definitions most likely are the same).  */
+#if HAVE_MINMAX_IN_LIMITS_H
+# include <limits.h>
+#elif HAVE_MINMAX_IN_SYS_PARAM_H
+# include <sys/param.h>
+#endif
+
+/* Note: MIN and MAX should be used with two arguments of the
+   same type.  They might not return the minimum and maximum of their two
+   arguments, if the arguments have different types or have unusual
+   floating-point values.  For example, on a typical host with 32-bit 'int',
+   64-bit 'long long', and 64-bit IEEE 754 'double' types:
+
+     MAX (-1, 2147483648) returns 4294967295.
+     MAX (9007199254740992.0, 9007199254740993) returns 9007199254740992.0.
+     MAX (NaN, 0.0) returns 0.0.
+     MAX (+0.0, -0.0) returns -0.0.
+
+   and in each case the answer is in some sense bogus.  */
+
+/* MAX(a,b) returns the maximum of A and B.  */
+#ifndef MAX
+# define MAX(a,b) ((a) > (b) ? (a) : (b))
+#endif
+
+/* MIN(a,b) returns the minimum of A and B.  */
+#ifndef MIN
+# define MIN(a,b) ((a) < (b) ? (a) : (b))
+#endif
+
+#endif /* _MINMAX_H */
diff --git a/lib/glm4/gnulib-cache.m4 b/lib/glm4/gnulib-cache.m4
index 76ab890..052a4e5 100644
--- a/lib/glm4/gnulib-cache.m4
+++ b/lib/glm4/gnulib-cache.m4
@@ -27,7 +27,7 @@
 
 
 # Specification in the form of a command-line invocation:
-#   gnulib-tool --import --dir=. --lib=libgnu --source-base=lib/gllib --m4-base=lib/glm4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --lgpl=2 --no-conditional-dependencies --libtool --macro-prefix=lgl --no-vc-files hash-pjw-bare intprops lib-symbol-versions lib-symbol-visibility stdint strverscmp
+#   gnulib-tool --import --dir=. --lib=libgnu --source-base=lib/gllib --m4-base=lib/glm4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --lgpl=2 --no-conditional-dependencies --libtool --macro-prefix=lgl --no-vc-files hash-pjw-bare intprops lib-symbol-versions lib-symbol-visibility minmax stdint strverscmp
 
 # Specification in the form of a few gnulib-tool.m4 macro invocations:
 gl_LOCAL_DIR([])
@@ -36,6 +36,7 @@ gl_MODULES([
   intprops
   lib-symbol-versions
   lib-symbol-visibility
+  minmax
   stdint
   strverscmp
 ])
diff --git a/lib/glm4/gnulib-comp.m4 b/lib/glm4/gnulib-comp.m4
index 8cbba4d..3af169f 100644
--- a/lib/glm4/gnulib-comp.m4
+++ b/lib/glm4/gnulib-comp.m4
@@ -47,6 +47,7 @@ AC_DEFUN([lgl_EARLY],
   # Code from module intprops:
   # Code from module lib-symbol-versions:
   # Code from module lib-symbol-visibility:
+  # Code from module minmax:
   # Code from module multiarch:
   # Code from module snippet/arg-nonnull:
   # Code from module snippet/c++defs:
@@ -76,6 +77,7 @@ AC_DEFUN([lgl_INIT],
   AC_REQUIRE([gl_EXTERN_INLINE])
   gl_LD_VERSION_SCRIPT
   gl_VISIBILITY
+  gl_MINMAX
   gl_MULTIARCH
   gt_TYPE_SSIZE_T
   gl_STDDEF_H
@@ -231,6 +233,7 @@ AC_DEFUN([lgl_FILE_LIST], [
   lib/hash-pjw-bare.c
   lib/hash-pjw-bare.h
   lib/intprops.h
+  lib/minmax.h
   lib/stddef.in.h
   lib/stdint.in.h
   lib/string.in.h
@@ -244,6 +247,7 @@ AC_DEFUN([lgl_FILE_LIST], [
   m4/include_next.m4
   m4/ld-version-script.m4
   m4/longlong.m4
+  m4/minmax.m4
   m4/multiarch.m4
   m4/off_t.m4
   m4/ssize_t.m4
diff --git a/lib/glm4/minmax.m4 b/lib/glm4/minmax.m4
new file mode 100644
index 0000000..edbeb43
--- /dev/null
+++ b/lib/glm4/minmax.m4
@@ -0,0 +1,44 @@
+# minmax.m4 serial 4
+dnl Copyright (C) 2005, 2009-2014 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_PREREQ([2.53])
+
+AC_DEFUN([gl_MINMAX],
+[
+  AC_REQUIRE([gl_PREREQ_MINMAX])
+])
+
+# Prerequisites of lib/minmax.h.
+AC_DEFUN([gl_PREREQ_MINMAX],
+[
+  gl_MINMAX_IN_HEADER([limits.h])
+  gl_MINMAX_IN_HEADER([sys/param.h])
+])
+
+dnl gl_MINMAX_IN_HEADER(HEADER)
+dnl The parameter has to be a literal header name; it cannot be macro,
+dnl nor a shell variable. (Because autoheader collects only AC_DEFINE
+dnl invocations with a literal macro name.)
+AC_DEFUN([gl_MINMAX_IN_HEADER],
+[
+  m4_pushdef([header], AS_TR_SH([$1]))
+  m4_pushdef([HEADER], AS_TR_CPP([$1]))
+  AC_CACHE_CHECK([whether <$1> defines MIN and MAX],
+    [gl_cv_minmax_in_]header,
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <$1>
+            int x = MIN (42, 17);]],
+          [[]])],
+       [gl_cv_minmax_in_]header[=yes],
+       [gl_cv_minmax_in_]header[=no])])
+  if test $gl_cv_minmax_in_[]header = yes; then
+    AC_DEFINE([HAVE_MINMAX_IN_]HEADER, 1,
+      [Define to 1 if <$1> defines the MIN and MAX macros.])
+  fi
+  m4_popdef([HEADER])
+  m4_popdef([header])
+])