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Since the addition of the _Float128 API, strfromf128 and printf_size use
__printf_fp to print _Float128 values. This is achieved by setting the
'is_binary128' member of the 'printf_info' structure to one. Now that
the format of long double on powerpc64le is getting a third option, this
mechanism is reused for long double values that have binary128 format
(i.e.: when -mabi=ieeelongdouble).
This patch adds __printf_sizeieee128 as an exported symbol, but doesn't
provide redirections from printf_size, yet. All redirections will be
installed in a future commit, once all other functions that print or
read long double values with binary128 format are ready. In
__printf_fp, when 'is_binary128' is one, the floating-point argument is
treated as if it was of _Float128 type, regardless of the value of
'is_long_double', thus __printf_sizeieee128 sets 'is_binary128' to the
same value of 'is_long_double'. Otherwise, double values would not be
printed correctly.
Tested for powerpc64le.
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This patch adds __*ieee128 symbols for strfrom, strtold, strtold_l, wcstold
and wcstold_l functions. Redirection from *l to *ieee128 will be handled
in separate patch once we start building these new files.
2018-06-28 Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com>
* sysdeps/ieee754/ldbl-128ibm-compat/Versions: Add __strfromieee128,
__strtoieee128, __strtoieee128_l,__wcstoieee128 and __wcstoieee128_l.
* sysdeps/ieee754/ldbl-128ibm-compat/strfromf128.c: New file.
* sysdeps/ieee754/ldbl-128ibm-compat/strtof128.c: New file.
* sysdeps/ieee754/ldbl-128ibm-compat/strtof128_l.c: New file.
* sysdeps/ieee754/ldbl-128ibm-compat/wcstof128.c: New file.
* sysdeps/ieee754/ldbl-128ibm-compat/wcstof128_l.c: New file.
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Add a new libm-alias-float128.h in order to provide the __*ieee128
aliases for the existing *f128 that do not have a globally exported
symbol.
* sysdeps/ieee754/ldbl-128ibm-compat/Versions: New file.
* sysdeps/ieee754/ldbl-128ibm-compat/libm-alias-float128.h: New file.
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