int rdrand16_retry (unsigned int retries, uint16_t *rand)
{
unsigned int count= 0;
while ( count <= retries ) {
if ( rdrand16_step(rand) ) {
return 1;
}
++count;
}
return 0;
}
/** ***************************************************************
* fill with _step functions
*/
int fill_uint16_step(uint16_t* buf, int size, int retry_limit)
{
int j,k;
int rc;
for (j=0; j<size; ++j)
{
k = 0;
do
{
rc = rdrand16_step ( &buf[j] );
++k;
}
while ( rc == RDRAND_FAILURE && k < retry_limit);
}
return size;
}
int rdrand_get_uint16_retry(uint16_t *dest, int retry_limit) {
int rc;
int count;
uint16_t x;
if ( retry_limit < 0 ) retry_limit = RETRY_LIMIT;
count = 0;
do {
rc=rdrand16_step( &x );
++count;
} while((rc == 0) || (count < retry_limit));
if (rc == 1) {
*dest = x;
return 1;
} else {
return 0;
}
}
