diff options
Diffstat (limited to 'libgeome.h')
| -rw-r--r-- | libgeome.h | 17 |
1 files changed, 15 insertions, 2 deletions
@@ -10,6 +10,19 @@ #define LIBGEOME_DATUM_LONGITUDE UINT64_C(0x0000000000000002) #define LIBGEOME_DATUM_ALTITUDE UINT64_C(0x0000000000000004) +/** + * The highest bit in `.requested_data` that is used + * in the applications version of `struct libgeome_data` + * + * You can an #if'ed CPP warning to detected when this + * value has been changed, so you can add support for + * new data in your application. When you do this, you + * can also always set the `.requested_data` to + * `LIBGEOME_LAST_DATUM - 1U | LIBGEOME_LAST_DATUM` + * to get all data your application support. + */ +#define LIBGEOME_LAST_DATUM LIBGEOME_DATUM_ALTITUDE + /** * Geolocation data @@ -96,7 +109,7 @@ struct libgeome_netservice { /** * Geolocation data that may be provided by the service * - * 0 if unknown (always known (non-zero) when retreived + * 0 if unknown (always known (non-zero) when retrieved * from libgeome_netservices) * * See `struct libgeome_data.requested_data` @@ -156,7 +169,7 @@ struct libgeome_netservice { * Be aware these services may have terms of use that * restrict how you are allowed to use them. */ -extern struct libgeome_netservice libgeome_netservices[]; +extern const struct libgeome_netservice libgeome_netservices[]; /** * The number of elements in `libgeome_netservices` |