Where are the MAPI data types documented?

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In MonetDB's mapi.h, I see:

#define MAPI_AUTO   0   /* automatic type detection */
#define MAPI_TINY   1
#define MAPI_UTINY  2
#define MAPI_SHORT  3
#define MAPI_USHORT 4
#define MAPI_INT    5
#define MAPI_UINT   6
#define MAPI_LONG   7
#define MAPI_ULONG  8
#define MAPI_LONGLONG   9
#define MAPI_ULONGLONG  10
#define MAPI_CHAR   11
#define MAPI_VARCHAR    12
#define MAPI_FLOAT  13
#define MAPI_DOUBLE 14
#define MAPI_DATE   15
#define MAPI_TIME   16
#define MAPI_DATETIME   17
#define MAPI_NUMERIC    18

And these types are also mentioned in the somewhat-lacking documentation

But what does each of these mean? What are the corresponding sizes? What's machine-word-length-dependent (if anything)? I can't find where any of this stuff is documented.

asked 21 secs ago

einpoklum

2,451