dfp-bit.c (dfp_unary_func): Delete.

	* config/dfp-bit.c (dfp_unary_func): Delete.
	(dfp_unary_op): Delete.
	(dfp_binary_op): Use decFloat functions instead of decNumber
	functions for binary operations.
	(d32_binary_op): Convert 32-bit operands to 64 bits for evaluation.
	(dnn_binary_op): Call dfp_binary_op with decFloat rather than
	DFP_C_TYPE.
	(dfp_compare_op): Use decFloat functions insteadof decNumber
	functions for comparisons.
	(d32_compare_op): Convert 32-bit operands to 64 bits for evaluation.
	(dnn_binary_op): Call dfp_compare_op with decFloat rather than
	DFP_C_TYPE.
	(DFP_ADD, DFP_SUB, DFP_MULTIPLE, DFP_DIVIDE): Use macros for
	call to dxx_binary_op and decFloat function.
	(DFP_EQ, DFP_NE, DFP_LT, DFP_GT, DFP_LE, DFP_GE): Use macros for
	calls to dxx_binary_op and decFloat function.
	* config/dfp-bit.h: Include decFloat header files.
	(decFloat, DFP_BINARY_OP, DFP_COMPARE_OP, DEC_FLOAT_ADD,
	DEC_FLOAT_SUBTRACT, DEC_FLOAT_MULTIPLY, DEC_FLOAT_DIVIDE,
	DEC_FLOAT_COMPARE, DEC_FLOAT_IS_ZERO, DEC_FLOAT_IS_NAN,
	DEC_FLOAT_IS_SIGNED: Define for each of 3 operand widths.

From-SVN: r128358