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Diffstat (limited to 'src/libmongo-macros.h')
-rw-r--r-- | src/libmongo-macros.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/libmongo-macros.h b/src/libmongo-macros.h new file mode 100644 index 0000000..644fbe8 --- /dev/null +++ b/src/libmongo-macros.h @@ -0,0 +1,51 @@ +/* libmongo-macros.h - helper macros for libmongo-client. + * Copyright 2011, 2012 Gergely Nagy <algernon@balabit.hu> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef LIBMONGO_MACROS_H +#define LIBMONGO_MACROS_H 1 + +#include <glib.h> + +inline static gdouble +GDOUBLE_SWAP_LE_BE(gdouble in) +{ + union + { + guint64 i; + gdouble d; + } u; + + u.d = in; + u.i = GUINT64_SWAP_LE_BE (u.i); + return u.d; +} + +#if G_BYTE_ORDER == G_LITTLE_ENDIAN +#define GDOUBLE_TO_LE(val) ((gdouble) (val)) +#define GDOUBLE_TO_BE(val) (GDOUBLE_SWAP_LE_BE (val)) + +#elif G_BYTE_ORDER == G_BIG_ENDIAN +#define GDOUBLE_TO_LE(val) (GDOUBLE_SWAP_LE_BE (val)) +#define GDOUBLE_TO_BE(val) ((gdouble) (val)) + +#else /* !G_LITTLE_ENDIAN && !G_BIG_ENDIAN */ +#error unknown ENDIAN type +#endif /* !G_LITTLE_ENDIAN && !G_BIG_ENDIAN */ + +#define GDOUBLE_FROM_LE(val) (GDOUBLE_TO_LE (val)) +#define GDOUBLE_FROM_BE(val) (GDOUBLE_TO_BE (val)) + +#endif |