return 'Not a Number' NAME nan, nanf, nanl - return 'Not a Number' LIBRARY Math library ( libm , -lm ) SYNOPSIS #include <math.h> do...return 'Not a Number' NAME nan, nanf, nanl - return 'Not a Number' LIBRARY Math library ( libm , -lm ) SYNOPSIS #include <math.h> do......in this manual page is similar. SEE ALSO atof (3), atoi (3), atol (3), nan (3), nanf (3), nanl (3), strfromd (3), strtol (3), strtoul (3)...in this manual page is similar. SEE ALSO atof (3), atoi (3), atol (3), nan (3), nanf (3), nanl (3), strfromd (3), strtol (3), strtoul (3)...in this manual page is similar. SEE ALSO atof (3), atoi (3), atol (3), nan (3), nanf (3), nanl (3), strfromd (3), strtol (3), strtoul (3)