Differential D13466 Diff 46665 source/blender/blenlib/BLI_span.hh

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constexpr MutableSpan slice(const int64_t start, const int64_t size) const		constexpr MutableSpan slice(const int64_t start, const int64_t size) const
{		{
BLI_assert(start >= 0);		BLI_assert(start >= 0);
BLI_assert(size >= 0);		BLI_assert(size >= 0);
const int64_t new_size = std::max<int64_t>(0, std::min(size, size_ - start));		const int64_t new_size = std::max<int64_t>(0, std::min(size, size_ - start));
return MutableSpan(data_ + start, new_size);		return MutableSpan(data_ + start, new_size);
}		}

		constexpr MutableSpan slice(IndexRange range) const
		{
		return this->slice(range.start(), range.size());
		}

/**		/**
* Returns a new MutableSpan with n elements removed from the beginning. This invokes		* Returns a new MutableSpan with n elements removed from the beginning. This invokes
* undefined behavior when n is negative.		* undefined behavior when n is negative.
*/		*/
constexpr MutableSpan drop_front(const int64_t n) const		constexpr MutableSpan drop_front(const int64_t n) const
{		{
BLI_assert(n >= 0);		BLI_assert(n >= 0);
const int64_t new_size = std::max<int64_t>(0, size_ - n);		const int64_t new_size = std::max<int64_t>(0, size_ - n);
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