Passing floats from CVI to TestStand.

[NiNewbee]

Hello,

 I have compiled the below into a .dll using CVI. It converts the hex input to a floating decimal. Calling this .dll from TestStand 3.5 returns the decimal number 15. The output from the CVI I/O window is 15.380562. The input is "417616C8". In TestStand when theFloat is declared as a unsigned 32-bit integer it returns "15" If assigned a 32-bit Real Number (float) it returns "IND" Any ideas why I cannot return the whole 15.380562?

Thanks in advance,

Steve 

long __declspec(dllexport) HexToFloat(char HexInput[])
{
    float theFloat;

 sscanf (HexInput, "%x", (int *) &theFloat);  

 //scanf("%x", (int *) &theFloat);  
 printf("Hex input 0x%08X, %f\n\n", *(int *)&theFloat, theFloat);

 return theFloat;
}

[jr_2005]

You have defined the function as type long. Try using float (or double) instead.

    double __declspec(dllexport) HexToFloat(char HexInput[])
 

JR

[NiNewbee]

Well that was easy. Thanks....