first.f90
 real information
 kind(x)= 1   kind(y)= 2
 digits 24 53
 epsilon   1.1920929E-07   2.2204460492503131E-16
 huge   3.4028235E+38  1.7976931348623157E+308
 maxexponent 128 1024
 minexponent -125 -1021
 precision 6 15
 radix 2 2
 range 37 307
 tiny   1.1754944E-38  2.2250738585072014E-308
 sin(0.5)   0.4794255   0.4794255386042030
 integer information
 kind(i)= 3 12345
 kind(j)= 3 123456789
 kind(k)= 3 2147483647