FORTRAN 77 Language Reference

IEEE Representation of Selected Numbers

The values here are as shown by dbx, in hexadecimal.

Table C-2 IEEE Representation of Selected Numbers

Value 

Single-Precision 

Double-Precision  

+0 

00000000 

0000000000000000  

-0 

80000000 

8000000000000000  

+1.0 

3F800000 

3FF0000000000000  

-1.0 

BF800000 

BFF0000000000000  

+2.0 

40000000 

4000000000000000  

+3.0 

40400000 

4008000000000000  

+Infinity 

7F800000 

7FF0000000000000  

-Infinity 

FF800000 

FFF0000000000000  

NaN 

7Fxxxxxx 

7FFxxxxxxxxxxxxx