Manual – IPOSplus®
205
17
Overview of commands for standard functions
Compiler – Functions
17.2 Overview of commands for standard functions
A large part of the IPOS
plus®
machine commands that are familiar from the IPOS
plus®
Assembler language are reproduced in the IPOS
plus®
Compiler's high-level language in
the form of certain syntactical constructions. For example, arithmetic commands (ADD,
SUB, etc.) are created by appropriate operators (+, -, etc.) or set commands (SET...) are
replaced by the assignment operator (=). However, there are also commands with no
equivalent in the programming language. These commands (GOA, BSET, etc.) are re-
produced using functions that form part of the Compiler and are therefore described as
standard functions, in contrast to user-defined functions.
The parameters of the IPOS
plus®
machine commands become function arguments of
the standard functions. The names of all standard functions start with an underscore (_)
so it is easier to distinguish them from user functions in the source text.
The constants specified as an argument in many functions are defined in the header file
CONSTB.H (MOVIDRIVE
®
B). If you want to use your own names instead, you can de-
fine them using the #define directive.
The following tables list the standard functions and the unit-specific availability.
17.2.1 Standard bit functions
Command Function Availability
Reference
MOVIDRIVE
®
B MOVITRAC
®
B MQx
_BitClear Deletes a bit within a variable X X X (page 209)
_BitMove Copies a bit in one variable to a bit
in another variable.
X X X (page 209)
_BitMoveNeg Copies a bit in one variable to a bit
in another variable and negates it.
X X X (page 209)
_BitSet Sets a bit within a variable X X X (page 210)
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