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distate.cpp: Use count_leading_zeros_64 to calculate format width

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AJR 2023-09-21 18:52:05 -04:00
parent 62e064ae70
commit 7df764a9d3
1 changed files with 1 additions and 3 deletions
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4
src/emu/distate.cpp
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@ -127,9 +127,7 @@ void device_state_entry::format_from_mask()
// make up a format based on the mask
if (m_datamask == 0)
throw emu_fatalerror("%s state entry requires a nonzero mask\n", m_symbol);
int width = 0;
for (u64 tempmask = m_datamask; tempmask != 0; tempmask >>= 4)
width++;
int width = (63 - count_leading_zeros_64(m_datamask)) / 4 + 1;
m_format = string_format("%%0%dX", width);
}