<分区>
这是我的尝试。关于更好解决方案的任何提示？:
// for loop to convert 32 to 16 bits
uint32_t i;
int32_t * samps32 = (int32_t *)&(inIQbuffer[0]);
int16_t * samps16 = (int16_t *)&(outIQbuffer[0]);
for( i = 0; i < ( num_samples * 2/* because each sample is two int32 s*/ ); i++ ) {
overflowCount += ( abs(samps32[i]) & 0xFFFF8000 ) ? 1 : 0;
samps16[i] = (int16_t)samps32[i];
}
// Only report error every 4096 accumulated overflows
if( ( overflowCount & 0x1FFF ) > 4096 ) {
printf( "ERROR: Overflow has occured while scaling from 32 "
"bit to 16 bit samples %d times",
overflowCount );
}
这是实际检查溢出的部分:
overflowCount += ( abs(samps32[i]) & 0xFFFF8000 ) ? 1 : 0;