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wrapping sub

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This commit is contained in:
Logan McNaughton 2023-10-10 21:31:51 -06:00
parent e4f4d6a9ae
commit 3d94f14c5b
1 changed files with 1 additions and 1 deletions
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2
src/device/cop0.rs
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@ -201,7 +201,7 @@ pub fn set_control_registers(device: &mut device::Device, index: u32, mut data:
COP0_COMPARE_REG => {
data &= 0xFFFFFFFF;
let current_count = (device.cpu.cop0.regs[COP0_COUNT_REG as usize] >> 1) & 0xFFFFFFFF;
let mut compare_event_diff = data as u32 - current_count as u32;
let mut compare_event_diff = (data as u32).wrapping_sub(current_count as u32);
if compare_event_diff == 0 {
compare_event_diff += !0 as u32;