Data Types - Scanlab RTC 5 PC Interface Board Installation And Operation Manual

10.1.7 Data Types

The following table defines the formats and ranges
of the different data types used by the
®
RTC 5 commands:
Data Format
unsigned 32-bit value
signed 32-bit value
64-bit IEEE floating point
format
pointer to a null-terminated
ANSI string, 1 byte per char
Pointer to Locations in the PC's Memory
Some commands (e.g. get_transform, get_values,
get_waveform, transform
have pointers to locations in the PC's memory as
parameters. In C# and Pascal, appropriate pointer
data types are herefore used (see import declara-
tions). In C and C++, the data type ULONG_PTR is
used for this pointer parameters. The ULONG_PTR
data type is defined in the C and C++ import decla-
rations as follows (ULONG_PTR = unsigned 32-bit
value for Win32-based applications, ULONG_PTR =
unsigned 64-bit value for Win64-based applications):
#if !defined(ULONG_PTR)
#if defined(WIN32)
#define ULONG_PTR UINT
#else
#define ULONG_PTR UINT64
#endif
#endif
Usually, the data type ULONG_PTR is also appropri-
ately defined in the WINDOWS header file
<BaseTsd.h>.
®
RTC 5 PC Interface Board
Rev. 1.9 e
10 Commands And Functions
Range Pascal
32
[0; (2 –1)] longword
31 31
[–2 ; +(2 –1)] longint
double
4 Byte (for pchar
Win32-based
applications)
8 Byte (for
Win64-based
applications)
or upload_transform)
C, C++ C#
unsigned long uint
long int
double double
char* string
226