N105: Print Trace-Back

Author(s): J. Zoll	Library: KERNLIB
Submitter:	Submitted: 01.12. 1973
Language: Fortran	Revised: 15.09.1978

TRACEQ prints the Fortran trace-back leading to TRACEQ. The maximum number of trace-back levels is specified as an argument. Fewer levels may be printed either because the main program has been reached or because the trace-back linkage is invalid.

Structure:

SUBROUTINE subprogram
User Entry Names: TRACEQ
Internal Entry Names: TRAC1Q, TRAC2Q
Files Referenced: User defined
COMMON Block Names and Lengths: /SLATE/ 40

Usage:

    CALL TRACEQ(LUN,N)

LUN

Logical unit number of the print file, is accepted to mean the standard print file.

N

Maximum number of trace-back levels to be printed.

Notes:

The implementation of TRACEQ depends on the machine; on some machines this cannot be done at all and the routine is a dummy. On some other machines the unit for printing or the number of levels printed is not under program control.