floatformat.h (struct floatformat): Add split_half field.

floatformat.h (struct floatformat): Add split_half field.

include:
2007-11-07  Joseph Myers  <joseph@codesourcery.com>
	    Daniel Jacobowitz  <dan@codesourcery.com>

	* floatformat.h (struct floatformat): Add split_half field.
	(floatformat_ibm_long_double): New.

libiberty:
2007-11-07  Joseph Myers  <joseph@codesourcery.com>
	    Daniel Jacobowitz  <dan@codesourcery.com>

	* floatformat.c (mant_bits_set): New.
	(floatformat_to_double): Use it.  Note no special handling of
	split formats.
	(floatformat_from_double): Note no special handing of split
	formats.
	(floatformat_ibm_long_double_is_valid,
	floatformat_ibm_long_double): New.
	(floatformat_ieee_single_big, floatformat_ieee_single_little,
	floatformat_ieee_double_big, floatformat_ieee_double_little,
	floatformat_ieee_double_littlebyte_bigword, floatformat_vax_f,
	floatformat_vax_d, floatformat_vax_g, floatformat_i387_ext,
	floatformat_m68881_ext, floatformat_i960_ext,
	floatformat_m88110_ext, floatformat_m88110_harris_ext,
	floatformat_arm_ext_big, floatformat_arm_ext_littlebyte_bigword,
	floatformat_ia64_spill_big, floatformat_ia64_spill_little,
	floatformat_ia64_quad_big, floatformat_ia64_quad_little): Update
	for addition of split_half field.

Co-Authored-By: Daniel Jacobowitz <dan@codesourcery.com>
From-SVN: r129977