29 lines
608 B
C
29 lines
608 B
C
#include "mem_utils.h"
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#include "aliases.h"
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#include <assert.h>
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#include <stdbool.h>
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#include <stdlib.h>
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internal bool is_power_of_two(u64 num) { return (num & (num - 1)) == 0; }
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void *wapp_mem_util_align_forward(void *ptr, u64 alignment) {
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if (!ptr) {
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return NULL;
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}
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assert(is_power_of_two(alignment));
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uptr p = (uptr)ptr;
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uptr align = (uptr)alignment;
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// Similar to p % align, but it's a faster implementation that works fine
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// because align is guaranteed to be a power of 2
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uptr modulo = p & (align - 1);
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if (modulo != 0) {
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p += align - modulo;
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}
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return (void *)p;
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}
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