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The calling function should take alternative action if these bounds are violated.

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float x, result;

if( x <= -1 || x >= 1){
     /* handle domain error */
}

result = acos(x);

atan2

Non-Compliant Solution

The following code may produce a domain error if both x and y are zero.

float x, y, result;

result = atan2(y, x);

Compliant Solution

The following code tests the arguments to ensure that there is not a domain error.

float x, y, result;

if( x == 0 && y == 0){
     /* handle domain error */
}

result = atan2(y, x);

pow(x,y)

Non-Compliant Example

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float x, y, result;

result = pow(x,y);

Compliant Solution

The following code tests x and y to ensure that there will be no range or domain errors.

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