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[random] assert aMax is bigger than aMin (#3894)

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This commit is contained in:
Yakun Xu
2019-06-05 10:14:09 -07:00
committed by Jonathan Hui
parent 7c10be51fa
commit 73f17031a1
1 changed files with 6 additions and 2 deletions
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src/core/common/random.hpp
+6 -2
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@@ -36,10 +36,11 @@
#include "openthread-core-config.h"
#include "utils/wrap_stdint.h"
#include <openthread/error.h>
#include "common/debug.hpp"
#include "utils/wrap_stdint.h"
#ifndef OPENTHREAD_RADIO
#include <mbedtls/ctr_drbg.h>
@@ -90,6 +91,7 @@ inline uint16_t GetUint16(void)
*/
inline uint8_t GetUint8InRange(uint8_t aMin, uint8_t aMax)
{
assert(aMax > aMin);
return (aMin + (GetUint8() % (aMax - aMin)));
}
@@ -105,6 +107,7 @@ inline uint8_t GetUint8InRange(uint8_t aMin, uint8_t aMax)
*/
inline uint16_t GetUint16InRange(uint16_t aMin, uint16_t aMax)
{
assert(aMax > aMin);
return (aMin + (GetUint16() % (aMax - aMin)));
}
@@ -121,6 +124,7 @@ inline uint16_t GetUint16InRange(uint16_t aMin, uint16_t aMax)
*/
inline uint32_t GetUint32InRange(uint32_t aMin, uint32_t aMax)
{
assert(aMax > aMin);
return (aMin + (GetUint32() % (aMax - aMin)));
}