Put LGPLv3+ notices in source files where appropriate.

* lib/**.{h,c}: Use LGPLv3+ notice whenever the module description says
so.

1 files changed, 17 insertions, 0 deletions

diff --git a/lib/acosl.c b/lib/acosl.c
index 634c247dd6..7b4e7ca1d0 100644
--- a/lib/acosl.c
+++ b/lib/acosl.c
@@ -1,3 +1,20 @@
+/* arccos (inverse cosine) function with 'long double' argument.
+
+   Copyright (C) 2003-2021 Free Software Foundation, Inc.
+
+   This file 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 3 of the
+   License, or (at your option) any later version.
+
+   This file 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 <https://www.gnu.org/licenses/>.  */
+
 /*
  * ====================================================
  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.