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Hi, I'm doing bit-packing via a C function. Logging the bits of the C function shows the expected result. If I create a string with a hex value format, I get the correct hex string, but, if I try to put the bytes into an NSData object with [NSData dataWithBytes: length], the order of the bits changes. All of the right elements are there, but they're in the wrong order (target data should be f0000651, as shown in the Target string is ... log). My code: // get the target int from the text field unsigned int tgtValue = [self.tgtTF intValue]; // use the target int and type to pack the bits into an int uint32_t tgtBinary = setAnalogValueForIndex(cid, tgtValue); NSString *tgtString = [NSString stringWithFormat:@"%x", tgtBinary]; NSData *tgtData = [NSData dataWithBytes: &tgtBinary length: sizeof(tgtBinary)]; NSLog(@"Target data is %@. Target string is %@", tgtData, tgtString); The logs: 11110000000000000000011001010001 2009-11-30 11:02:26.126 CertTest[11959:a0f] Target data is <510600f0>. Target string is f0000651 2009-11-30 11:02:26.204 CertTest[11959:a0f] After adding target, cmdData is <510600f0> If NSData is rearranging the bits, is there some way to prevent this? Thanks. Brad _______________________________________________ Cocoa-dev mailing list (email@hidden) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: This email sent to email@hidden
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