m68k/fpsp040/res_func.S

59 	btstb	#7,DTAG(%a6)	|if dop = norm=000, zero=001,
87 	btstb	#7,STAG(%a6)	|if sop = norm=000, zero=001,
119 	beql	cu_nmove	|if zero, it is an fmove
163 	btstl	#5,%d0			|test for NaN or zero
173 	btstl	#5,%d0			|test for NaN or zero
295 	tstl	LOCAL_HI(%a0)		|test for zero
300 | The mantissa is zero from the denorm loop.  Check sign and rmode
329 	cmpib	#0x40,%d0		|check if input was tagged zero
342 	tstw	LOCAL_EX(%a0)		|test for zero
344 	cmpw	#0x8000,LOCAL_EX(%a0)	|test for zero
422 	beql	cu_dmove	|if zero, it is an fmove
477 | is double or single, the result is zero, and the mode is checked
496 | The move is fdmove or round precision is double.  Result is zero.
504 	bne	cu_dpd			|load double pos zero
505 	bra	cu_dpdr			|load double pos zero w/lsb
508 	bne	cu_dnd			|load double neg zero
509 	bra	cu_dndr			|load double neg zero w/lsb
511 | The move is fsmove or round precision is single.  Result is zero.
519 	bne	cu_spd			|load single pos zero
520 	bra	cu_spdr			|load single pos zero w/lsb
523 	bne	cu_snd			|load single neg zero
524 	bra	cu_sndr			|load single neg zero w/lsb
536 | These routines write +/- zero in double format.  The routines
540 	movel	#0x3c010000,LOCAL_EX(%a0)	|force pos double zero
547 	movel	#0x3c010000,LOCAL_EX(%a0)	|force pos double zero
553 	movel	#0xbc010000,LOCAL_EX(%a0)	|force pos double zero
561 	movel	#0xbc010000,LOCAL_EX(%a0)	|force pos double zero
568 | These routines write +/- zero in single format.  The routines
572 	movel	#0x3f810000,LOCAL_EX(%a0)	|force pos single zero
579 	movel	#0x3f810000,LOCAL_EX(%a0)	|force pos single zero
585 	movel	#0xbf810000,LOCAL_EX(%a0)	|force pos single zero
593 	movel	#0xbf810000,LOCAL_EX(%a0)	|force pos single zero
679 	beq	fix_stk		|if zero, it is fsqrt
730 	cmpb	#0x20,%d0			|is it a zero?
733 	rts				|then ; it is either a zero of norm,
863 	clrl	%d0		|force sticky to zero
891 	clrl	%d0		|force sticky to zero
1038 	clrl	%d0		|force sticky to zero
1066 	clrl	%d0		|force sticky to zero
1370 	cmpib	#0x20,%d0			|check if zero
1372 	orl	#z_mask,USER_FPSR(%a6)	|if zero, set Z
1974 | Notes on handling of special case (zero, inf, and nan) inputs: