x87 is a floating-point-related subset of the x86 architecture instruction set. It originated as an extension of the 8086 instruction set in the form...

instructions provided by x87 obey PC and RC. x87 coprocessors (other than the 8087) handle exceptions in a fairly unusual way. When an x87 instruction generates...

mode switching penalty for issuing x87 instructions present in MMX because it is sharing register space with the x87 FPU. The SSE2 also complements the...

independent clocking schemes. CORDIC routines have been implemented in Intel x87 coprocessors (8087, 80287, 80387) up to the 80486 microprocessor series,...

aliases for the existing x87 floating-point unit (FPU) registers, which context switches would already save and restore. Unlike the x87 registers, which behave...

do have limited support for the decimal numeral system. In addition, the x87 part supports a unique 18-digit (ten-byte) BCD format that can be loaded...

integrated this x87 functionality on chip which made the x87 instructions a de facto integral part of the x86 instruction set. Each x87 register, known...

The available speed version were 4.77 (5), 8, and 10 MHz. There were later x87 coprocessors for the 80186, 80286, 80386, and 80386SX processors. Starting...

Put simply, if the X87 state was enabled in XCR0 and PT state was enabled in IA32_XSS, the XSAVE instruction would only store X87 state, while the privileged...

is supported via mandatory SSE2-like instructions[citation needed], and x87/MMX style registers are generally not used (but still available even in 64-bit...

the standard x87 FPU, 3DNow! instructions and x87 instructions cannot be executed simultaneously. However, because it is aliased to the x87 FPU, the 3DNow...

avoid the use of extended precision on x86 machines with the traditional x87 floating-point architecture. Although it was easy to control calculation...

Paulista X74 Campo dos Amarais Observatory SP Observatorio Campo dos Amarais X87 Dogsheaven Observatory DF Dogsheaven Observatory, Brasilia X88 Adhara Observatory...

the MMX instruction set. MMX had two main problems: it re-used existing x87 floating-point registers making the CPUs unable to work on both floating-point...

to bring extra precision in intermediate computations for platforms like x87. Thus a modifier strictfp was introduced to enforce strict IEEE 754 computations...

Kahan, a primary designer of the x87 arithmetic and initial IEEE 754 standard proposal notes on the development of the x87 floating point: "An extended format...

the 80486; it also allows faster access and storage of 64-bit and 80-bit x87 FPU data. Separation of code and data caches lessens the fetch and operand...

values are put in the ST0 x87 register. Registers EAX, ECX, and EDX are caller-saved, and the rest are callee-saved. The x87 floating point registers ST0...

expressions (see IEEE 754 design rationale) and is the designed default method for x87 hardware, but yields unintuitive behavior for the unwary user; FLT_EVAL_METHOD...

extended precision binary number must have an 'emax' of at least 16383. The x87 80-bit extended format meets this requirement. The original IEEE 754-1985...

and the 80387 works with the 80386. The combination of an x86 CPU and an x87 coprocessor forms a single multi-chip microprocessor; the two chips are programmed...

mathematics functions (for example, trigonometric functions) like the Intel x87 family, and required specific software libraries to support their functions...

architecture FP64 FP32 FP16 Intel CPU Intel 80486 x87 (32-bit) ? 0.128 ? Intel P5 Pentium Intel P6 Pentium Pro x87 (32-bit) ? 0.5 ? Intel P5 Pentium MMX Intel...

signal processing applications" (PDF). Casey, Shawn (16 October 2008). "x87 and SSE Floating Point Assists in IA-32: Flush-To-Zero (FTZ) and Denormals-Are-Zero...

all general purpose registers worked directly with the decoder, and the x87 push stack was located within the floating-point unit itself. Starting with...

the 386DX. The first Cyrix product for the personal computer market was a x87 compatible FPU coprocessor. The Cyrix FasMath 83D87 and 83S87 were introduced...

the CISC HP 3000 machines and the CISC machines from Tandem Computers. The x87 floating point architecture is an example of a set of registers organised...

supported) Supports i586 instruction set, without x87. Supports i586 instruction set, without x87. Intel Quark SoC X1000 contains a bug (#71538) that...

identifiers Antaresia Wikidata: Q866457 Wikispecies: Antaresia AFD: Antaresia CoL: X87 EoL: 41352 GBIF: 2465002 iNaturalist: 32137 IRMNG: 1297669 ITIS: 634407 NCBI:...

specifies minimum precision and exponent requirements for such formats. The x87 80-bit extended format is the most commonly implemented extended format that...