ReLU

Perform the ReLU (Rectified Linear Unit) activation function on an input matrix:

$$C[i][j] = \max(0, A[i][j])$$

The ReLU function is defined as:

$$f(x) = \begin{cases} x & \text{if } x > 0 \\ 0 & \text{if } x \leq 0 \end{cases}$$

Input:

• Matrix $A$ of size $M \times N$ containing floating-point values

Output:

• Matrix $C$ of size $M \times N$ containing the ReLU activation values

Notes:

• Both matrices $\text{A}$ and $\text{C}$ are stored in row-major order
• This problem is adapted from KernelBench