IBM N27-1269 C28-0328-3 update free download

File name N27-1269_C28-0328-3_update.pdf

Technical Newsletter File Number 1410/7010-25 Re: Form No. C28-0328-3 This Newsletter No. N27-l269 Date December 30, 1966 Previous Newsletter Nos. None IBM 1410/7010 FORTRAN This Technical Newsletter amends the publication IBM 1410/7010 Operating System; FORTRAN, Form C28-0328-3, to include an addi- tion concerning the SUBROUTINE subprogram. The attached replacement pages (25-26) should be substituted for the corresponding pages now in the publication. Text changes are indicated by a vertical line to the left of the affected text. Please file this cover letter at the back of the publication. It provides a method of determining if all changes have been received and incorporated into the publication. IBM Corporation, Programming Publications, Dept. 637, Neighborhood Road, Kingston, N. Y. 12401 PRINTED IN U.S.A. N27-l269 (C28-0328-3) Page 1 of 1 Form C28-0328-3 Page Revised 12/30/66 By TNL N27-1269 No card should precede the SUBROUTIXE statement. Machine Indicator Tests The SUBROUTIXE subprogram may use one or more The 1410/7010 FORTRAN language provides machine of its arguments to return values to the calling program. indicator tests even though machine components refer- Any arguments so used must appcar on the left side of enced by the tests do not physically exist. The machine an arithmetic statement or in an input list within the indicators, described below, are simulated by SUB- subprogram. The name of the SUBROUTINE must not be HOUTINE subprograms located in the System Library. used as a variablc in its SUBHOUTINE subprogram. To use any of the following machine indicator tests, The arguments may be considered dummy variable the user