If you need to convert from, let’s say ushort to float, you will not find any prepared conversion function in ILMath. Luckily, it is very easy to write your own:

Here comes a method which implements the conversion from ushort -> float. A straight forward version first:

        /// <summary>
        /// Convert ushort data to ILArray&lt;float>
        /// </summary>
        /// <param name="A">Input Array</param>
        /// <returns>Array of the same size as A, single precision float elements</returns>
        public static ILRetArray<float> UShort2Single(ILInArray<ushort> A) {
            using (ILScope.Enter(A)) {
                ILArray<float> ret = ILMath.zeros<float>(A.S);
                var retArr = ret.GetArrayForWrite();
                var AArr = A.GetArrayForRead();
                int c = 0;
                foreach (ushort a in A) {
                    retArr[c++] = a;
                }
                return ret;
            }
        }

This method is used like that:

            ushort[,] rawSensorData = new ushort[,] {{0,1,2},{3,4,5}};
            ILArray<float> converted = UShort2Single(rawSensorData);
            /*
             * <Single> [3,2]
             * [0]:          0          3
             * [1]:          1          4
             * [2]:          2          5
             */

            // continue working with 'converted' here...

The following method does the same but utilizes pointer arithmetic, hence it needs the /unsafe flag. Use this, if performance is critical and your data are sufficiently large:

        /// <summary>
        /// Convert ushort data to ILArray&lt;float> (unsafe version)
        /// </summary>
        /// <param name="A">Input Array</param>
        /// <returns>Array of the same size as A, single precision float elements</returns>
        public unsafe static ILRetArray<float> UShort2SingleUnsafe(ILInArray<ushort> A) {
            using (ILScope.Enter(A)) {
                ILArray<float> ret = ILMath.zeros<float>(A.S);
                var retArr = ret.GetArrayForWrite();
                var AArr = A.GetArrayForRead();

                fixed (ushort* pAArr = AArr)
                fixed (float* pRetArr = retArr) {
                    ushort* pInWalk = pAArr;
                    ushort* pInEnd = pAArr + A.S.NumberOfElements;
                    float* pRetWalk = pRetArr;
                    while (pInWalk < pInEnd) {
                        *(pRetWalk++) = /*implicit: (float)*/ (*(pInWalk++));
                    }
                }
                return ret;
            }
        }

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