void * ra8_stbtt_malloc(size_t n)
Allocate n bytes of glyph scratch from the static arena.
void ra8_stbtt_free(void *p)
Release a block previously returned by ra8_stbtt_malloc().
size_t ra8_stbtt_alloc_high_water(void)
Worst-case arena high-water mark observed since boot, in bytes.