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Programming Features

5.2 3X-DAPBA-FA and 3X-DAPCA-FA ATM LAN Adapters (Alpha)

The 3X-DAPBA-FA (HE155) and 3X-DAPCA-FA (HE622) are PCI based ATM

LAN adapters for Alpha based systems that provide high performance PCI-to-

ATM capability. The 3X-DAPBA-FA adapter offers a 155 Mbps ﬁber connection;

the 3X-DAPCA-FA adapter offers a 622 Mbps ﬁber connection.

The datalink drivers for these adapters function in a new OpenVMS ATM

environment. The new OpenVMS ATM environment is fully compatible with the

existing legacy ATM support and allows both ATM environments to be conﬁgured

on a single system. Also, the LANCP management interface is the same for both

ATM environments.

For additional information about the 3X-DAPBA-FA PCI HE155 ATM and

3X-DAPCA-FA PCI HE622 ATM LAN adapters, refer to the following URL:

http://www.compaq.com/alphaserver/products/options

5.3 Compaq COBOL Run-Time Library Enhancements

The COBOL RTL for both Alpha and VAX supports ﬁve new intrinsic functions

with four-digit year formats:

YEAR-TO-YYYY

DATE-TO-YYYYMMDD

DAY-TO-YYYYDDD

TEST-DATE-YYYYMMDD

TEST-DAY-YYYYDDD

The COBOL RTL for Alpha has improved performance for the DISPLAY

statement redirected to a ﬁle and for programs compiled with the /MATH=CIT3

and /MATH=CIT4 qualiﬁers.

This RTL’s handling of ON SIZE ERROR is now more compatible with that of

Compaq COBOL for OpenVMS VAX.

5.4 Compaq C Run-Time Library Enhancements

The following sections describe the Compaq C RTL enhancements included in

OpenVMS Version 7.3. For more details, refer to the revision of the Compaq C

RTL Reference Manual that ships with Compaq C Version 6.3 or later.

5.4.1 Strptime Function Is XPG5-Compliant

The

strptime

function has been modiﬁed to be compliant with X/Open CAE

Speciﬁcation System Interfaces and Headers Issue 5 (commonly known as XPG5).

The change for XPG5 is in how the

strptime

function processes the "%y" directive

for a two-digit year within the century if no century is speciﬁed.

When a century is not otherwise speciﬁed, XPG5 requires that values for the

"%y" directive in the range 69-99 refer to years in the twentieth century (1969 to

1999 inclusive), while values in the range 00-68 refer to years in the twenty-ﬁrst

century (2000 to 2068 inclusive). Essentially, for the "%y" directive,

strptime

became a "pivoting" function, with 69 being a pivoting year.

Before this change, the

strptime

function interpreted a two-digit year with no

century as a year within twentieth century.

5–2 Programming Features