Texas Instruments TMS320C67X/C67X+ DSP - Manual (Page 70)

Overview of IEEE Standard Single- and Double-Precision Formats
Instruction Set 3-10 SPRU733
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