lambda-expressions (Part I) Background Before C++11, you could define anonymous and local functions only in local classes. That is, for non-member functions, called functions must be defined outside of the caller functions. To solve this problem, lambda-expressions are introduced in C++11. Lambda-expressions can be defined within functions and called by their enclosing functions.   C++14 also proposes two supplements to this feature, which you can find in this article. Elements of lambda-expressions Lambda-expression syntax... [More]

The XL C/C++ for Blue Gene/Q Fix Pack 14 (May 2016 Update) for 12.1 is now available at the following link and on  Fix Central :      XL  C/C+ + fo r Bl ue G ene/ Q Fi x Pa ck 14 (A ugus t 20 15 U pdat e) f or 1 2.1        Cumulative APAR Fix lists:          Fix  lis t fo r XL  C/C ++ f or B lue  Gene /Q        Can't find the updates for your... [More]

The XL C/C++ for AIX Fix Pack 7 (May 2016 PTFs) for 13.1 are now available at the following links and on  Fix Central: X L   C / C + +   f o r   A I X   F i x   P a c k  (May  2 0 1 6   P T F )   f o r   1 3 . 1 F i x   l i s t   f o r   X L   C / C + +   f o r   A I X X L   C   f o r   A I X   F i x   P a c k  7  (May  2 0 1 6   P T F )   f o r   1 3 . 1 F i x   l i s t   f o r   X L  ... [More]

The XL C/C++ for AIX Fix Pack 15 (April 2016 Update) for 12.1 is now available at the following links and on  Fix Central :       XL   C f o r A I X F i x P a ck  15 (April 2 0 16  U pda t e)  f or  1 2.1       XL   C/C + + f o r A I X F i x P a ck  15 (April 2 0 16  U pda t e)  f or  1 2 . 1      Cumulative APAR Fix lists:      Fi x  li s t f o r X L... [More]

We've started a new IBM developerWorks community for the XL C/C++ and XL Fortran compilers for POWER platforms (AIX and Linux on Power). Over time we will be phasing out the Fortran Cafe, and discontinuing updates relating to XL C/C++ on POWER to the C/C++ Cafe. Instead, articles, blog posts and links will be posted to the developerWorks community. If you are interested in the XL compilers on POWER, and are following this cafe and getting updates for it via RSS feed or email update, you may want to join the new community and subscribe to... [More]

The XL C/C++ for AIX Fix Pack 23 (March 2016 PTF) for 11.1 are now available at the following links and on  Fix Central: XL C for AIX Fix Pack 23 (March 2016 PTF) for 11.1 Fix list for XL C for AIX   XL C/C++ for AIX Fix Pack 23 (March 2016 PTF) for 11.1 Fix list for XL C/C++ for AIX   Can't find the updates for your compiler? Check out our C/C++ compiler... [More]

The XL C/C++ Runtime for AIX Fix Pack 1 (March 2016 PTF) for 13.1.3 is now available at the following links and on  Fix Central:   XL C/C++ Runtime for AIX Fix Pack 1 (March 2016 PTF) for 13.1.3   F i x   l i s t   f o r   X L   C / C + +   R u n t i m e   f o r   A I X   Can't find the updates for your compiler? Check out our C/C++ compiler latest update page  here

The XL C/C++ for Linux Fix Pack 1 (February 2016 PTFs) for 13.1.3 are now available at the following links and on  Fix Central:   XL C/C++ for Linux Fix Pack 1 (February 2016 Update) for 13.1.3 Fix list for XL C/C++ for Linux     XL C/C++ Runtime for Linux Fix Pack 1 (February 2016 Update) for 13.1.3 Fix list for XL C/C++ Runtime for Linux  ... [More]

The XL C/C++ for AIX Fix Pack 6 (February 2016 PTFs) for 13.1 are now available at the following links and on  Fix Central: X L   C / C + +   f o r   A I X   F i x   P a c k 6 (February  2 0 16  P T F )   f o r   1 3 . 1 F i x   l i s t   f o r   X L   C / C + +   f o r   A I X X L   C   f o r   A I X   F i x   P a c k  6  (February  2 0 16  P T F )   f o r   1 3 . 1 F i x   l i s t   f o r   X L... [More]

The XL C/C++ for AIX Fix Pack 14 (December 2015 Update) for 12.1 is now available at the following links and on  Fix Central :       XL  C fo r AI X Fi x Pa ck 14 (December 20 15 U pdat e) f or 1 2.1       XL  C/C+ + fo r AI X Fi x Pa ck 14 (December 20 15 U pdat e) f or 1 2. 1      Cumulative APAR Fix lists:      Fix  lis t fo r XL  C f... [More]

The cache characteristics of a processor can have a dramatic impact on the performance of memory-intensive algorithms. It's often helpful to align key data structures on cache line boundaries. However, cache characteristics vary from processor to processor, and it would be nice to be able to select behavior at run time based on the characteristics of the current processor.   Since 2008, IBM processors have included the "EXTRACT CPU ATTRIBUTE (ECAG)" non-privileged instruction  (originally called "EXTRACT CACHE... [More]

Tags:  systemz cache assembler

The XL C/C++ for AIX Fix Pack 5 (November 2015 PTFs) for 13.1 are now available at the following links and on  Fix Central: X L   C / C + +   f o r   A I X   F i x   P a c k 5 (November  2 0 1 5   P T F )   f o r   1 3 . 1 F i x   l i s t   f o r   X L   C / C + +   f o r   A I X X L   C   f o r   A I X   F i x   P a c k  5  (November  2 0 1 5   P T F )   f o r   1 3 . 1 F i x   l i s t   f o r  ... [More]

  http://ibm.co/1P6enhP    

The variable template, which comes from N3651, is one of the major proposals in Standard C++14. The main purpose of the variable template is to simplify definitions and uses of parameterized constants. [1][2] Rules before C++14 do not allow declaring a variable using a template declaration. There are workarounds for this problem before C++14, but they are either redundant or complicated. The first workaround is constexpr static data members of class templates as shown in Code 1. However, duplicate declarations are required: one inside the class... [More]