I need to work with some IEEE754 64 bit floats (actually lat and long in radians from a Trimble Thunderbolt in big endian TSIP format) - I have installed the latest V10 but am wondering how to make sure it treats the long doubles as 64 bit float.
Here is the link I used https://www.mikrocontroller.net/topic/480840#6076058
It mentions there are 2 new options: -mlong-double = 32/64 (default: 64) and -mdouble = 32/64 (default: 32) so that the layout of (long) double is chosen at compile time , but not sure where to put these options and if any extra libraries are need.
I'm using Atmel Studio 7.0
Any pinters as to what else I need to do ?
PS I'm partially sighted so I have to use bold fonts.