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System Workbench for STM32


giving parameters into math function

according to this
http://en.cppreference.com/w/c/numeric/math/truncQuestion

trun returns a double not an int. the hard fault could result from the invalid type conversion from double to int.
Ints are 4 byte long (on an STM32) doubles are 8 byte long.

try to do something like that
double intput = 1.4;
double res = truc(input);

does this still result in a hardfault?