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C/C++ Libraries
5.2 Programming Guide
5.2.1 Naming Convention
The functions of the NuDAQ PCI cards or NuIPC CompactPCI cards’ software
drivers use full-names to represent the functions' real meaning. The naming
convention rules are:
In DOS:
_{hardware_model}_{action_name}.
e.g.
_7200_Initial()
.
All functions in the PCI-7200 driver are named with 7200 as {hardware_model}.
But they can be used by PCI-7200, cPCI-7200 and LPCI-7200S.
In order to recognize the difference between DOS library and Windows 95
library, a capital "
W
" is put on the head of each function name of the Windows
95 DLL driver (e.g.
W_7200_Initial()
).
5.2.2 Data Types
Some data types are definded in Pci_7200.h (DOS) and Acl_pci.h (Windows
95). These data types are used by NuDAQ Cards’ library. We suggest using
these data types. The following table shows the data type names and their
range.
Type Name Description Range
U8 8-bit ASCII character 0 to 255
I16 16-bit signed integer -32768 to 32767
U16 16-bit unsigned integer 0 to 65535
I32 32-bit signed integer -2147483648 to 2147483647
U32 32-bit single-precision
floating point
0 to 4294967295
F32 32-bit single-precision
floating point
-3.402823E38 to 3.402823E38
F64 64-bit double-precision
floating point
-1.797683134862315E308 to
1.797683134862315E309
Boolean Boolean logic value TRUE, FALSE