Revised [PATCH] ARM half-precision floating point, 7/8 (library support)

[Sandra Loosemore]

Here's another slightly revised patch.  Compared to the version I posted last 
month, the only change here is that I updated the copyright notice and license 
on the new fp16.c file.

OK to commit now?

-Sandra

2009-05-15  Paul Brook  <paul@codesourcery.com>
	    Sandra Loosemore  <sandra@codesourcery.com>

	gcc/
	* config/arm/sfp-machine.h (_FP_NANFRAC_H, _FP_NANSIGN_H): Define.
	(__extendhfsf2, __truncsfhf2): Define.
	* config/arm/fp16.c: New file.
	* config/arm/t-bpabi (LIB2FUNCS_STATIC_EXTRA): Add fp16.c.
	* config/arm/t-symbian (LIB2FUNCS_STATIC_EXTRA):  Add fp16.c.
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