in src/couch_quickjs/quickjs/cutils.c [438:470]
static inline exchange_f exchange_func(const void *base, size_t size) {
switch (((uintptr_t)base | (uintptr_t)size) & 15) {
case 0:
if (size == sizeof(uint64_t) * 2)
return exchange_one_int128;
else
return exchange_int128s;
case 8:
if (size == sizeof(uint64_t))
return exchange_one_int64;
else
return exchange_int64s;
case 4:
case 12:
if (size == sizeof(uint32_t))
return exchange_one_int32;
else
return exchange_int32s;
case 2:
case 6:
case 10:
case 14:
if (size == sizeof(uint16_t))
return exchange_one_int16;
else
return exchange_int16s;
default:
if (size == 1)
return exchange_one_byte;
else
return exchange_bytes;
}
}