Texas Instruments TMS320C3x - Manual (Page 118)

Floating-Point Formats
5-13 Data Formats and Floating-Point Operation
Figure 5–12. Converting from Single-Precision Floating-Point Format
to Extended-Precision Floating-Point Format
Single-precision floating-point format
Extended-precision floating-point format
0 y x x
y y y x x
31 24 23 22 0
39 32 30 31 0
y y 0
8 7
The 8 LSBs of the mantissa field are filled with 0s.
Figure 5–13. Converting from Extended-Precision Floating-Point Format
to Single-Precision Floating-Point Format
Extended-precision floating-point format
z y x x
39 32 30 31 0
y y z
8 7
Single-precision floating-point format
y y y x x
31 24 23 22 0
The 8 LSBs of the mantissa field are truncated.