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This patch defines 3 macros to tell the user whether -mfloat128 is enabled or not, and whether long double is IBM extended double or IEEE 128-bit floating point. I have built the compiler with this patch and the previous subpatches (1 and 2). I have bootstrapped the compiler with all 16 subpatches installed, and there were no regressions. Is it ok to install in the trunk? 2015-10-22 Michael Meissner <meissner@linux.vnet.ibm.com> * config/rs6000/rs6000-c.c (rs6000_cpu_cpp_builtins): Define __FLOAT128__ if -mfloat128. Define __LONG_DOUBLE_IEEE128__ if long double is IEEE 128-bit. Define __LONG_DOUBLE_IBM128__ if long double is IBM extended double. -- Michael Meissner, IBM IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA email: meissner@linux.vnet.ibm.com, phone: +1 (978) 899-4797
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