Suppress spurious floating point conversion warning

This is defined by the standard to work with floating point expressions, the
warning is a quirk of glibc.

1 files changed, 38 insertions, 0 deletions

diff --git a/src/warnings.h b/src/warnings.h
new file mode 100644
index 00000000..9886dc75
--- /dev/null
+++ b/src/warnings.h
@@ -0,0 +1,38 @@
+/*
+  Copyright 2019 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#if defined(__clang__)
+#define SERD_DISABLE_CONVERSION_WARNINGS \
+	_Pragma("clang diagnostic push") \
+	_Pragma("clang diagnostic ignored \"-Wconversion\"")
+	_Pragma("clang diagnostic ignored \"-Wdouble-promotion\"")
+#elif defined(__GNUC__)
+#define SERD_DISABLE_CONVERSION_WARNINGS \
+	_Pragma("GCC diagnostic push") \
+	_Pragma("GCC diagnostic ignored \"-Wconversion\"")
+	_Pragma("GCC diagnostic ignored \"-Wdouble-promotion\"")
+#else
+#define SERD_DISABLE_CONVERSION_WARNINGS
+#endif
+
+#if defined(__clang__)
+#define SERD_RESTORE_WARNINGS _Pragma("clang diagnostic pop")
+#elif defined(__GNUC__)
+#define SERD_RESTORE_WARNINGS _Pragma("GCC diagnostic pop")
+#else
+#define SERD_RESTORE_WARNINGS
+#endif
+