C++17 P0067R5 std::to_chars and std::from_chars (partial)

This adds the integral overloads of std::to_chars and std::from_chars, including the changes made by P0682R0. Support for floating point types is absent. * include/Makefile.am: Add new <charconv> header. * include/Makefile.in: Regenerate. * include/precompiled/stdc++.h: Include <charconv>. * include/std/charconv: New file. (to_chars_result, to_chars, from_chars_result, from_chars): Define. * testsuite/20_util/from_chars/1.cc: New test. * testsuite/20_util/from_chars/1_neg.cc: New test. * testsuite/20_util/from_chars/2.cc: New test. * testsuite/20_util/from_chars/requirements.cc: New test. * testsuite/20_util/to_chars/1.cc: New test. * testsuite/20_util/to_chars/1_neg.cc: New test. * testsuite/20_util/to_chars/2.cc: New test. * testsuite/20_util/to_chars/requirements.cc: New test. From-SVN: r253353
gcc-mirror · Oct 2, 2017 · 804b7cc · 804b7cc
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diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
@@ -1,3 +1,19 @@
+2017-10-02  Jonathan Wakely  <jwakely@redhat.com>
+
+	* include/Makefile.am: Add new <charconv> header.
+	* include/Makefile.in: Regenerate.
+	* include/precompiled/stdc++.h: Include <charconv>.
+	* include/std/charconv: New file.
+	(to_chars_result, to_chars, from_chars_result, from_chars): Define.
+	* testsuite/20_util/from_chars/1.cc: New test.
+	* testsuite/20_util/from_chars/1_neg.cc: New test.
+	* testsuite/20_util/from_chars/2.cc: New test.
+	* testsuite/20_util/from_chars/requirements.cc: New test.
+	* testsuite/20_util/to_chars/1.cc: New test.
+	* testsuite/20_util/to_chars/1_neg.cc: New test.
+	* testsuite/20_util/to_chars/2.cc: New test.
+	* testsuite/20_util/to_chars/requirements.cc: New test.
+
 2017-09-27  François Dumont  <fdumont@gcc.gnu.org>
 
 	* testsuite/22_locale/money_get/get/char/22131.cc: Make test less

diff --git a/libstdc++-v3/include/Makefile.am b/libstdc++-v3/include/Makefile.am
@@ -31,6 +31,7 @@ std_headers = \
 	${std_srcdir}/array \
 	${std_srcdir}/atomic \
 	${std_srcdir}/bitset \
+	${std_srcdir}/charconv \
 	${std_srcdir}/chrono \
 	${std_srcdir}/codecvt \
 	${std_srcdir}/complex \

diff --git a/libstdc++-v3/include/Makefile.in b/libstdc++-v3/include/Makefile.in
@@ -324,6 +324,7 @@ std_headers = \
 	${std_srcdir}/array \
 	${std_srcdir}/atomic \
 	${std_srcdir}/bitset \
+	${std_srcdir}/charconv \
 	${std_srcdir}/chrono \
 	${std_srcdir}/codecvt \
 	${std_srcdir}/complex \

diff --git a/libstdc++-v3/include/precompiled/stdc++.h b/libstdc++-v3/include/precompiled/stdc++.h
@@ -121,3 +121,7 @@
 #if __cplusplus >= 201402L
 #include <shared_mutex>
 #endif
+
+#if __cplusplus > 201402L
+#include <charconv>
+#endif