first_bit_low

first_bit_low :: (int x) -> int {...}
first_bit_low :: (uint x) -> int {...}

pipeline ProcessBitmask {
  pass "Main" {
    compute "Main" [64, 1, 1] {
    // Process each set bit in the mask
    uint mask = activeMask;

    while (mask != 0u) {
        // Find lowest set bit
        int bitPos = first_bit_low(mask);

        // Process item at this bit position
        processItem(bitPos);

        // Clear the processed bit
        mask &= ~(1u << bitPos);
    }
    }
  }
}

// Process all set bits efficiently
while (mask != 0) {
    int bit = first_bit_low(mask);
    doSomething(bit);
    mask &= mask - 1;  // Clear lowest bit
}

// Check if exactly one bit is set
bool isPowerOf2 = first_bit_low(x) == first_bit_high(x);

// Count trailing zeros (bits after lowest set bit)
int trailingZeros = first_bit_low(x);

// Check alignment (power of 2)
int alignment = 1 << first_bit_low(address);

// Find highest priority (lowest bit = highest priority)
int highestPriority = first_bit_low(priorityMask);

findLSB(x)

firstbitlow(x)

ctz(x)  // Count trailing zeros