Racal Instruments 7064 Instruction Manual page 170

Table of Contents

Interface to error handler:

The error handler is passed the error descriptor and a pointer to a variable argument list

containing additional 'printf paramaters, if any. The application-specific error handler can use

the macros provided in error.h to analyze the error descriptor and take a p p r o p r i a t e action;

it's also free to ignore additional 'printf' arguments, if any exist. It is called with this interface:

application_error handler(unsigned errdes, void *argp)

where,

errdes : the error descriptor

argp : a pointer to a printf-style variable argument list

The Intermetrics C cross compiler supports neither the ANSI-standard nor the original UNIX-

style "variable argument" lists. A proprietary scheme is used instead; the declarations and macros

are found in the file "rt.h". They are:

ARGPTYPE: Data type of a variable-argument-list pointer A R G O

argument from a variable argument list A R G I N C ( ) : Increments pointer to point to next

argument in list

PUBLIC FUNCTIONS:

execerror()

Executive error handler

set_error_handler() : Set application-specific error handler

PRIVATE FUNCTIONS:

Strictly speaking, these functions should be declared 'static'. However, they have been declared

global in case the application-specific error handler wishes to make use of them.

error_ handler() : Default VT1 error handler

error_msg_lookupO : Lookup error message string given error descriptor