C and Fortran examples for the same routine contain exactly the same input data and should produce the same output, with possible differences in the amount of white spaces. For -0.00 and 0.00 (signed and unsigned zero), you can safely ignore these differences. The same input data is provided for double and single precision examples, for example,
. The output of the same routine in different precisions should differ only after several digits in mantissa, because single precision routines provide less precise results than double precision routines.