National Instruments AutoCode NI MATRIX - Manual (Page 28)

Chapter 2 C Language Reference
© National Instruments Corporation 2-11 AutoCode Reference
Linking Handwritten UCBs with AutoCode Applications
To write code for UserCode Blocks (UCBs), refer to the sa_user.c file,
which is provided in your src distribution directory.
The sa_user.c file contains an example of a UCB function declaration
(refer to the Implementing Handwritten UCBs section). If your model has
more than one UCB, each prototype must have a unique name. Make one
or more copies of this file and insert the code that implements the
algorithm(s) of the UCB(s). One or more uniquely-named UCB code
functions can be placed inside each copy of the
sa_user.c file and the
copies can be given any convenient names. If renamed files are included,
the names can be placed into the stand-alone file compilation script
(
compile_c_sa.sh ) for automatic compilation. If the UCB function—for
example, USR01, refer to callout 2 of Figure 2-1—is renamed, all other
occurrences of USR01 in
sa_user.c and sa_user.h also must be
changed appropriately, including the occurrence in directive $ucb . Refer
to callout 1 of Figure 2-1.