User`s guide

22  C/C++ Library
5.2 Programming Guide
5.2.1 Naming Convention
There are 7 function calls provided by the C Language Library. All the
functions of PCI-6308 are covered in this library. Its capabilities include
D/A conversion, Digital Input and Output, etc.
The functions of PCI-6308 software driver are using full-names to
represent the functions' real meaning. The naming convention rules are:
In DOS Environment:
_{hardware_model}_{action_name}. e.g.
_6308_Initial()
.
All functions in PCI-6308 driver are with 6308 as {hardware_model}. But
they can be used by PCI-6308V, PCI-6308A.
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_6308_Initial()
.
5.2.2 Data Types
We defined some data type in Pci_6308.h (DOS) and Acl_pci.h
(Windows 95). These data types are used by PCI-6308/6216 library.
We suggest you to use these data types in your application programs.
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