Fujitsu Fujitsu SPARC64 V manual Nonarithmetic Operations Under FSR.NS =, Yes and op2 Nv, dNaN

TABLE B-6describes how SPARC64 V behaves when FSR.NS = 1 (nonstandard mode).

TABLE B-6	Nonarithmetic Operations Under FSR.NS = 1
		op2=
Operations	op1= denorm	denorm	UFM	NXM	DVM	NVM	Result
FsTOd	—	Yes	—	1	—	—	NX
				0	—	—	nx, a signed zero
FdTOs	—	Yes	1	—	—	—	UF
			0	1	—	—	NX
				0	—	—	uf + nx, a signed zero
FADDs,	Yes	No		1	—	—	NX
FSUBs,				0	—	—	nx, op2
FADDd,
	No	Yes	—	1	—	—	NX
FSUBd
				0	—	—	nx, op1
	Yes	Yes		1	—	—	NX
				0	—	—	nx, a signed zero
FMULs,	Yes	—		1	—	—	NX
FMULd,			—	0	—	—	nx, a signed zero
FsMULd
	—	Yes		1	—	—	NX
				0			nx, a signed zero
FDIVs,	Yes	No		1	—	—	NX
FDIVd				0	—	—	nx, a signed zero
	No	Yes	—	—	1	—	DZ
				—	0	—	dz, a signed infinity
	Yes	Yes		—	—	1	NV
				—	—	0	nv, dNaN1
FSQRTs,		Yes and op2		1	—	—	NX
FSQRTd	—	> 0	—	0	—	—	nx, zero
		Yes and op2		—	—	1	NV
		< 0		—	—	0	nv, dNaN

1. A single precision dNaN is 7FFF.FFFF16, and a double precision dNaN is 7FFF.FFFF.FFFF.FFFF16.

Release 1.0, 1 July 2002 F. Chapter B IEEE Std 754-1985 Requirements for SPARC V9 67