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* Update copyright dates with scripts/update-copyrights.Joseph Myers2020-01-011-1/+1
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* ldbl-128ibm-compat: Add *cvt functionsGabriel F. T. Gomes2019-12-231-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds IEEE long double versions of q*cvt* functions for powerpc64le. Unlike all other long double to/from string conversion functions, these do not rely on internal functions that can take floating-point numbers with different formats and act on them accordingly, instead, the related files are rebuilt with the -mabi=ieeelongdouble compiler flag set. Having -mabi=ieeelongdouble passed to the compiler causes the object files to be marked with a .gnu_attribute that is incompatible with the .gnu_attribute in files built with -mabi=ibmlongdouble (the default). The difference causes error messages similar to the following: ld: libc_pic.a(s_isinfl.os) uses IBM long double, libc_pic.a(ieee128-qefgcvt_r.os) uses IEEE long double. collect2: error: ld returned 1 exit status make[2]: *** [../Makerules:649: libc_pic.os] Error 1 Although this warning is useful in other situations, the library actually needs to have functions with different long double formats, so .gnu_attribute generation is explicitly disabled for these files with the use of -mno-gnu-attribute. Tested for powerpc64le on the branch that actually enables the sysdeps/ieee754/ldbl-128ibm-compat for powerpc64le. Reviewed-by: Paul E. Murphy <murphyp@linux.ibm.com>
* Refactor *cvt functions implementation (2/2)Gabriel F. T. Gomes2019-12-231-8/+6
| | | | | | | | | | | | | | This patch refactors the *cvt functions implementation in a way that makes it easier to re-use them for implementing the IEEE long double on powerpc64le. By removing the macros that generate the function names (APPEND combined with FUNC_PREFIX), the new code makes it easier to define new function names, such as __qecvtieee128. Tested that installed stripped binaries for all build-many-glibcs targets remain identical before and after this patch. Also tested for powerpc64le and x86_64. Reviewed-by: Paul E. Murphy <murphyp@linux.ibm.com>
* Refactor *cvt functions implementation (1/2)Gabriel F. T. Gomes2019-12-231-0/+196
This patch refactors the *cvt functions implementation in a way that makes it easier to re-use them for implementing the IEEE long double on powerpc64le. By splitting the implementation per se in one file (efgcvt-template.c) and the alias definitions in others (e.g. efgcvt.c), the new code makes it easier to define new function names, such as __qecvtieee128. Tested that installed stripped binaries for all build-many-glibcs targets remain identical before and after this patch. Also tested for powerpc64le and x86_64. Reviewed-by: Paul E. Murphy <murphyp@linux.ibm.com>