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,...

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...

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

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...

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

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...

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

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

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

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...

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...

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...

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...

for complex numbers and wave calculation like sound. FISTTP Like the older x87 FISTP instruction, but ignores the floating point control register's rounding...

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...

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...

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...

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

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...

For readers unfamiliar with x87 programming, the fstsw-sahf followed by conditional jump idiom is used to access the x87 FPU status word bits C0 and C2...

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...

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

faster for general-purpose computing, while the Intel part was faster in x87 floating-point applications. To battle the Pentium II's dominance on floating...

analysis, most of the code used in PhysX applications at the time was based on x87 instructions without any multithreading optimization. This could cause significant...