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The HX DOS Extender also uses the PE format for native DOS 32-bit binaries, and can execute some Windows binaries in DOS, thus acting like an equivalent of Wine for DOS. Mac OS X 10.5 has the ability to load and parse PE files, although it does not maintain binary compatibility with Windows. [10]
This version was offered with the original 32-bit format or an optional expanded 40-bit (5-byte) format. The 40-bit format was used by most home computers of the 1970s and 1980s. These two versions are sometimes known as "6-digit" and "9-digit", respectively.
A floating-point variable can represent a wider range of numbers than a fixed-point variable of the same bit width at the cost of precision. A signed 32-bit integer variable has a maximum value of 2 31 − 1 = 2,147,483,647, whereas an IEEE 754 32-bit base-2 floating-point variable has a maximum value of (2 − 2 −23) × 2 127 ≈ 3.4028235 ...
In addition to the binary application code, the executables may contain headers and tables with relocation and fixup information as well as various kinds of meta data. Among those formats listed, the ones in most common use are PE (on Microsoft Windows ), ELF (on Linux and most other versions of Unix ), Mach-O (on macOS and iOS ) and MZ (on DOS ).
The universal binary format is a format for executable files that run natively either on both PowerPC-based and x86-based Macs or on both Intel 64-based and ARM64-based Macs. The format originated on NeXTStep as " Multi-Architecture Binaries ", and the concept is more generally known as a fat binary , as seen on Power Macintosh .
Contains the size of this header, normally 64 Bytes for 64-bit and 52 Bytes for 32-bit format. 0x2A: 0x36: 2: e_phentsize: Contains the size of a program header table entry. As explained below, this will typically be 0x20 (32 bit) or 0x38 (64 bit). 0x2C: 0x38: 2: e_phnum: Contains the number of entries in the program header table. 0x2E: 0x3A: 2 ...
A 32-bit register can store 2 32 different values. The range of integer values that can be stored in 32 bits depends on the integer representation used. With the two most common representations, the range is 0 through 4,294,967,295 (2 32 − 1) for representation as an binary number, and −2,147,483,648 (−2 31) through 2,147,483,647 (2 31 − 1) for representation as two's complement.
The binary format with the same bit-size, binary32, has an approximate range from subnormal-minimum ±1 × 10 ^ −45 over normal-minimum with full 24-bit precision: ±1.175 494 4 × 10 ^ −38 to maximum ±3.402 823 5 × 10 ^ 38.