fixed file name for installation

Signed-off-by: Andrey Skvortsov <Andrej.Skvortzov@gmail.com>
change typedefs to structs in test programs

Signed-off-by: Andrey Skvortsov <Andrej.Skvortzov@gmail.com>
fix return value for variant of double type

Signed-off-by: Andrey Skvortsov <Andrej.Skvortzov@gmail.com>
add support of adjust parameters for k*x+b

Signed-off-by: Andrey Skvortsov <Andrej.Skvortzov@gmail.com>
add gain and offset to man page

Signed-off-by: Andrey Skvortsov <Andrej.Skvortzov@gmail.com>
add tests for swapbytes, gain and offset parameters

Signed-off-by: Andrey Skvortsov <Andrej.Skvortzov@gmail.com>