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[PATCH, i386]: Use missing gcc math builtins


Hello!

This patch enhances libc's mathinline.h header to use some missing builtins
(mainly rounding builtins) that were added during 4.0 timeframe.

2005-06-08  Uros Bizjak  <uros@kss-loka.si>

	* sysdeps/i386/fpu/bits/mathinline.h (__pow2): Define
	using __builtin_ldexpl and __builtin_exp2l for GCC 4.0+.
	(floor, floorf, floorl): Define using __builtin_floorl for GCC 4.0+.
	(ceil, ceilf, ceill): Define using __builtin_ceill for GCC 4.0+.
	(__ldexp_code): Define using __builtin_ldexpl for GCC 4.0+.
	(rint, rintf, rintl): Don't define for GCC 4.0+.
	(__lrint_code): Define using __builtin_lrintl for GCC 4.0+ with
	__FAST_MATH__.
	(__llrint_code): Define using __builtin_llrintl for GCC 4.0+ with
	__FAST_MATH__.


Uros.

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