It works best if you provide a mask. That way you specify how far to sign extend. >>> bin(-27 & 0b1111111111111111) ‘0b1111111111100101’ Or perhaps more generally: def bindigits(n, bits): s = bin(n & int(“1″*bits, 2))[2:] return (“{0:0>%s}” % (bits)).format(s) >>> print bindigits(-31337, 24) 111111111000010110010111 In basic theory, the actual width of the number is a … Read more
You are probably looking for io.BytesIO class. It works exactly like StringIO except that it supports binary data: from io import BytesIO bio = BytesIO(b”some initial binary data: \x00\x01″) StringIO will throw TypeError: from io import StringIO sio = StringIO(b”some initial binary data: \x00\x01″)
Check out bsdiff and bspatch (website, manpage, paper, GitHub fork). To install this tool: Windows: Download and extract this package. You will also need a copy of bzip2.exe in PATH; download that from the “Binaries” link here. macOS: Install Homebrew and use it to install bsdiff. Linux: Use your package manager to install bsdiff.
The comments were getting too long. Consider the following block diagram: This represents an unrolled loop (for i in 0 to 7 loop) and shows that no add +3 occurs before i = 2 for the LS BCD digit and no add +3 occurs before i = 5 for the middle BCD digit, and no … Read more
This is very easy to do with C#. var str = “Hello world”; With LINQ foreach (string letter in str.Select(c => Convert.ToString(c, 2))) { Console.WriteLine(letter); } Pre-LINQ foreach (char letter in str.ToCharArray()) { Console.WriteLine(Convert.ToString(letter, 2)); }
A modern x86 CPU has three main operation modes (this description is simplified): In real mode, the CPU executes 16 bit code with paging and segmentation disabled. Memory addresses in your code refer to phyiscal addresses, the content of segment registers is shifted and added to the address to form an effective address. In protected … Read more
It’s quite easy, really, because the translation goes digit-by-digit. 0 – 0000 1 – 0001 2 – 0010 3 – 0011 4 – 0100 5 – 0101 6 – 0110 7 – 0111 8 – 1000 9 – 1001 A – 1010 B – 1011 C – 1100 D – 1101 E – 1110 F … Read more
The link you gave does actually describe the differences, but it’s buried at the bottom of the page: http://www.cplusplus.com/reference/cstdio/fopen/ Text files are files containing sequences of lines of text. Depending on the environment where the application runs, some special character conversion may occur in input/output operations in text mode to adapt them to a system-specific … Read more
You can use NSScanner() from the Foundation framework: let scanner = NSScanner(string: str) var result : UInt32 = 0 if scanner.scanHexInt(&result) { println(result) // 37331519 } Or the BSD library function strtoul() let num = strtoul(str, nil, 16) println(num) // 37331519 As of Swift 2 (Xcode 7), all integer types have an public init?(_ text: … Read more
Here’s an elegant solution: void getBin(int num, char *str) { *(str+5) = ‘\0’; int mask = 0x10 << 1; while(mask >>= 1) *str++ = !!(mask & num) + ‘0’; } Here, we start by making sure the string ends in a null character. Then, we create a mask with a single one in it (its … Read more