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Use of IBM COBOL was so widespread that Capex Corporation, an independent software vendor, made a post-code generation phase object code optimizer for it. [3] The Capex Optimizer became a quite successful product. [4] Although the IBM COBOL Compiler Family web site [5] only mentions AIX, Linux, and z/OS, IBM still offers COBOL on z/VM and z/VSE.
Floating point numbers also used base 10 rather than some binary base, and had up to 100 mantissa digits. A typical COBOL statement 'ADD A, B GIVING C' may use operands of different lengths, different digit representations, and different sign representations. This statement compiled into a single 12-byte instruction with 3 memory operands.
Timeline of COBOL language Year Informal name Official Standard 1960 COBOL-60 — 1961 COBOL-61 — 1963 COBOL-61 Extended — 1965 COBOL-65 — 1968 COBOL-68 ANSI INCITS X3.23-1968 1974 COBOL-74 ANSI INCITS X3.23-1974 1985 COBOL-85 ANSI INCITS X3.23-1985, ISO/IEC 1989:1985 2002 COBOL-2002 ISO/IEC 1989:2002 2014 COBOL-2014 ISO/IEC 1989:2014 2023
The 32-bit virtual address comprises a 14-bit segment number and an 18-bit displacement within the segment. The order code is not strictly part of the 2900 architecture. This fact has been exploited to emulate other machines by microcoding their instruction sets. However, in practice, all machines in the 2900 series implement a common order ...
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GnuCOBOL (formerly known as OpenCOBOL, and briefly as GNU Cobol) is a free implementation of the COBOL programming language that is part of the GNU project. GnuCOBOL translates the COBOL code into C and then compiles it using the native C compiler .
A single program deck, with individual subroutines marked. The markings show the effects of editing, as cards are replaced or reordered. Many early programming languages, including FORTRAN, COBOL and the various IBM assembler languages, used only the first 72 columns of a card – a tradition that traces back to the IBM 711 card reader used on the IBM 704/709/7090/7094 series (especially the ...
COBOL uses the syntax WRITE record-name AFTER ADVANCING n Lines., where record-name is the name of the area containing the line and n is the number of lines. Additionally BEFORE ADVANCING can be used or BEFORE|AFTER ADVANCING TOP to skip to the top of a new page. [1]