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-rw-r--r--src/internal/nc-util.h62
1 files changed, 62 insertions, 0 deletions
diff --git a/src/internal/nc-util.h b/src/internal/nc-util.h
new file mode 100644
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--- /dev/null
+++ b/src/internal/nc-util.h
@@ -0,0 +1,62 @@
+
+/*
+* Copyright (c) 2024 Vaughn Nugent
+*
+* Package: noscrypt
+* File: nc-util.c
+*
+* This library 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
+* of the License, or (at your option) any later version.
+*
+* This library 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 noscrypt. If not, see http://www.gnu.org/licenses/.
+*/
+
+#pragma once
+
+#ifndef NC_UTIL_H
+#define NC_UTIL_H
+
+/* NULL */
+#ifndef NULL
+ #define NULL ((void*)0)
+#endif /* !NULL */
+
+
+#ifdef DEBUG
+ /* Must include assert.h for assertions */
+ #include <assert.h>
+ #define DEBUG_ASSERT(x) assert(x);
+ #define DEBUG_ASSERT2(x, message) assert(x && message);
+
+ /*
+ * Compiler enabled static assertion keywords are
+ * only available in C11 and later. Later versions
+ * have macros built-in from assert.h so we can use
+ * the static_assert macro directly.
+ *
+ * Static assertions are only used for testing such as
+ * sanity checks and this library targets the c89 standard
+ * so static_assret very likely will not be available.
+ */
+ #if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
+ #define STATIC_ASSERT(x, m) static_assert(x, m)
+ #elif !defined(STATIC_ASSERT)
+ #define STATIC_ASSERT(x, m)
+ #pragma message("Static assertions are not supported by this language version")
+ #endif
+
+#else
+ #define DEBUG_ASSERT(x)
+ #define DEBUG_ASSERT2(x, message)
+ #define STATIC_ASSERT(x, m)
+#endif
+
+#endif /* NC_UTIL_H */ \ No newline at end of file