Texas Instruments TMS320C67X/C67X+ DSP manual 3. Ieee Floating-Point Notations, Sdfpn

Overview of IEEE Standard Single- and Double-Precision Formats

Table 3−3. IEEE Floating-Point Notations

Symbol	Meaning
s	Sign bit
e	Exponent field
f	Fraction (mantissa) field
x	Can have value of 0 or 1 (don’t care)
NaN	Not-a-Number (SNaN or QNaN)
SNaN	Signal NaN
QNaN	Quiet NaN
NaN_out	QNaN with all bits in the f field = 1
Inf	Infinity
LFPN	Largest floating-point number
SFPN	Smallest floating-point number
LDFPN	Largest denormalized floating-point number
SDFPN	Smallest denormalized floating-point number
signed Inf	+infinity or −infinity
signed NaN_out	NaN_out with s = 0 or 1

3-10 Instruction Set SPRU733