Math.Truncate should return the integral part

[MatthiasJentsch]

Details about Problem

nanoFramework area: nanoCLR

Worked before? Yes

Detailed repro steps so we can see the same problem

Math.Truncate should return the integral part. But I've found

float res = 0.0;
float retVal = modff(d, &res); 

stack.SetResult_R4( retVal );

in Library_corlib_native_System_Math::Truncate___STATIC__R4__R4
This code returns the fractional part.

[NemesisXB]

I will fix this.

[josesimoes]

This is because of a recent code change replacing the original code with the calls to the CRT standard lib functions. The args in the call are reversed if I remember correctly... 😊