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Add static assertions to constexpr functions

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apio 2022-11-18 17:59:19 +01:00
parent 9d318d50aa
commit 2e2656a02f
2 changed files with 31 additions and 2 deletions
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19
luna/Alignment.h
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@ -5,18 +5,35 @@ template <typename T> constexpr T is_aligned(T value, T align_base)
return (value % align_base == 0);
}
static_assert(is_aligned(1024, 512));
static_assert(!is_aligned(235, 32));
static_assert(is_aligned(40960, 4096));
template <typename T> constexpr T align_down(T value, T align_base)
{
return value - (value % align_base);
}
static_assert(align_down(598, 512) == 512);
static_assert(align_down(194, 64) == 192);
static_assert(align_down(62, 31) == 62);
template <typename T> constexpr T align_up(T value, T align_base)
{
if (is_aligned(value, align_base)) return value;
return align_down(value, align_base) + align_base;
}
static_assert(align_up(598, 512) == 1024);
static_assert(align_up(194, 64) == 256);
static_assert(align_up(62, 31) == 62);
template <typename T> constexpr T get_blocks_from_size(T value, T block_size)
{
return (value + (block_size - 1)) / block_size;
}
}
static_assert(get_blocks_from_size(40960, 4096) == 10);
static_assert(get_blocks_from_size(194, 64) == 4);
static_assert(get_blocks_from_size(2, 32) == 1);
static_assert(get_blocks_from_size(0, 256) == 0);

14
luna/Types.h
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@ -10,4 +10,16 @@ typedef int16_t i16;
typedef int32_t i32;
typedef int64_t i64;
typedef size_t usize;
typedef long isize;
typedef long isize;
static_assert(sizeof(u8) == 1UL);
static_assert(sizeof(u16) == 2UL);
static_assert(sizeof(u32) == 4UL);
static_assert(sizeof(u64) == 8UL);
static_assert(sizeof(i8) == 1UL);
static_assert(sizeof(i16) == 2UL);
static_assert(sizeof(i32) == 4UL);
static_assert(sizeof(i64) == 8UL);
static_assert(sizeof(usize) == 8UL);
static_assert(sizeof(isize) == 8UL);