For 32 bit ints, you can do it like this in C :
static inline OopType int32ToOop(int arg)
{
return (((OopType)arg << 3) | 2) ;
}
static inline unsigned int OopToInt32(OopType anOop) {
return (int) (anOop >> 3);
}
Norm
On 10/25/2017 2:30 AM, gustav de ridder
via Glass wrote:
Hello
I am writing an application using the Gembuilder for C API.
I am using GemStone/S 64 Bit 3.3 GemBuilder for C and
GemStone/S 64 Bit 3.3.3
If possible, I'd like to be able to map
an integer to its OOP (and back) without a database
round-trip.
In
gcioop.ht, there is a macro
GCI_I32_TO_OOP that converts a 32bit C int to OopType using
OOP_NUM_TAG_BITS and OOP_TAG_SMALLINT.
Can you identify all OopTypes that represent a
SmallInteger in gemstone using OOP_TAG_SMALLINT and reverse
the operations to get an int?
Regards
Gustav
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