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Replace BitUtils with C++20: Counting Zeroes

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With the upgrade to C++20, std::countl_zero and std::countr_zero can replace these home-spun implementations from the BitUtil.h library.
This commit is contained in:
Minty-Meeo 2022-10-10 04:03:15 -05:00
commit 05bebee802
8 changed files with 15 additions and 119 deletions
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3
Source/Core/VideoCommon/VideoCommon.h
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@ -4,6 +4,7 @@
#pragma once
#include <algorithm>
#include <bit>
#include "Common/BitUtils.h"
#include "Common/CommonTypes.h"
@ -82,7 +83,7 @@ inline u32 CompressZ16(u32 z24depth, DepthFormat format)
// If exponent is at the MAX (3, 7, or 12) then the next bit might still be a one, and can't
// be skipped, so the mantissa simply contains the next 14/13/12 bits
u32 leading_ones = Common::CountLeadingZeros((~z24depth) << 8);
u32 leading_ones = static_cast<u32>(std::countl_one(z24depth << 8));
bool next_bit_is_one = false; // AKA: Did we clamp leading_ones?
u32 exp_bits;