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C6000-CGT: Floating point calculations with CGT8.3.9

Part Number: C6000-CGT
Hello!

We start using CGT8.3.9 and find pow function's result is changed from CGT7.3.23.
Our code is just like below
float paramA;
float result= pow(10.0f, paramA* 0.001f);
The value of paramA is -1.172200e+04 and corresponding memory is c6372800
In CGT7 the result is 1.896705e-12 and corresponding memory is 2c057802
But in CGT8 the result is 1.896705e-12 and memory is 2c057801.
It will affect our later calculation.
Does the C library of pow changed between CGT7 and CGT8?

Br,
Risto