Intel 64 and IA32 Architectures Software Developers Manual Volume 2A: Instruction Set Reference, AM COMISSCompare Scalar Ordered SinglePrecision FloatingPoint Values and Set Intel 64 and IA32 Architectures Software Developers The COMISS instruction differs from the UCOMISS instruction in that it signals a SIMD floatingpoint invalid operation exception (# I) when a source operand is either a QNaN or SNaN. The UCOMISS instruction signals an invalid numeric exception only if a source operand is an SNaN.
iii table of contents chapter 1 about this manual 1. 1. overview of the intel architecture software developers manual, volume 2: instruction set reference 11 Documentation Home x86 Assembly Language Reference Manual Chapter 3 Instruction Set Mapping SSE Instructions.
x86 Assembly Language Reference Manual. SSE Instructions. SSE instructions are an extension of the SIMD execution model introduced with the MMX technology.
SSE instructions are divided into four subgroups: In computing, Streaming SIMD Extensions (SSE) is an SIMD instruction set extension to the x86 architecture, designed by Intel and introduced in 1999 in their Pentium III series of processors shortly after the appearance of AMD's 3DNow!. 947 rows x86 and amd64 instruction reference. Derived from the May 2018 version of the Intel 64 and IA32 Architectures Software Developers Manual.
Last updated. THIS REFERENCE IS NOT PERFECT. It's been mechanically separated into distinct files by a dumb script. IA32 Intel Architecture Software Developers Manual Volume 2: Instruction Set Reference NOTE: The IA32 Intel Architecture Software Developers Manual consists of three volumes: Basic Architecture, Order Number; Comiss x86 instruction manual Set Reference, Order Number; and the System Programming Guide, Order Number Intel 64 and IA32 Architectures Software Developers Manual Volume 2 (2A, 2B& 2C): Instruction Set Reference, AZ NOTE: The Intel 64 and IA32 Architectures Software Developer's Manual consists of three volumes: The x86 processors have a large set of flags that represent the state of the processor, and the conditional jump instructions can key off of them in combination.
CF carry flag Set on highorder bit carry or borrow; cleared otherwise x86 Architecture Overview The IA32 is the instruction set architecture (ISA) of Intels most successful line of 32bit processors, and the Intel 64 ISA is its extension into 64bit processors. (Actually Intel 64 was invented by AMD, who called it x8664).
The x86 instruction set refers to the set of instructions that x86compatible microprocessors support. The instructions are usually part of an executable program, often stored as a computer file and executed on the processor.
x86 Assembly Language Reference Manual. Previous: Packed Arithmetic Instructions (SSE) Next: Logical Instructions (SSE) Comparison Instructions (SSE) The SEE compare instructions compare packed and scalar singleprecision floatingpoint operands.
Table 329 Comparison Instructions (SSE) COMISS. perform ordered comparison