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- Floating-point_unit abstract "A floating-point unit (FPU, colloquially a math coprocessor) is a part of a computer system specially designed to carry out operations on floating point numbers. Typical operations are addition, subtraction, multiplication, division, square root, and bitshifting. Some systems (particularly older, microcode-based architectures) can also perform various transcendental functions such as exponential or trigonometric calculations, though in most modern processors these are done with software library routines.In general purpose computer architectures, one or more FPUs may be integrated with the central processing unit; however many embedded processors do not have hardware support for floating-point operations.When a CPU is executing a program that calls for a floating-point operation, there are three ways to carry it out: A floating-point unit emulator (a floating-point library) Add-on FPU Integrated FPUSome systems implemented floating point via a coprocessor rather than as an integrated unit. This could be a single integrated circuit, an entire circuit board or a cabinet. Where floating-point calculation hardware has not been provided, floating point calculations are done in software, which takes more processor time but which avoids the cost of the extra hardware. For a particular computer architecture, the floating point unit instructions may be emulated by a library of software functions; this may permit the same object code to run on systems with or without floating point hardware. Emulation can be implemented on any of several levels: in the CPU as microcode (not a common practice), as an operating system function, or in user space code. When only integer functionality is available the CORDIC floating point emulation methods are most commonly used.In most modern computer architectures, there is some division of floating-point operations from integer operations. This division varies significantly by architecture; some, like the Intel x86 have dedicated floating-point registers, while some take it as far as independent clocking schemes.Floating-point operations are often pipelined. In earlier superscalar architectures without general out-of-order execution, floating-point operations were sometimes pipelined separately from integer operations. Since the early and mid-1990s, many microprocessors for desktops and servers have more than one FPU.".
- Floating-point_unit thumbnail KL_Intel_C80287.jpg?width=300.
- Floating-point_unit wikiPageID "37096".
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- Floating-point_unit wikiPageRevisionID "653448615".
- Floating-point_unit wikiPageWikiLink 68030.
- Floating-point_unit wikiPageWikiLink 80286.
- Floating-point_unit wikiPageWikiLink 80287.
- Floating-point_unit wikiPageWikiLink 80386.
- Floating-point_unit wikiPageWikiLink 80386SX.
- Floating-point_unit wikiPageWikiLink 80387.
- Floating-point_unit wikiPageWikiLink 80387SX.
- Floating-point_unit wikiPageWikiLink Addition.
- Floating-point_unit wikiPageWikiLink Amiga.
- Floating-point_unit wikiPageWikiLink Arbitrary-precision_arithmetic.
- Floating-point_unit wikiPageWikiLink Arithmetic.
- Floating-point_unit wikiPageWikiLink Arithmetic_logic_unit.
- Floating-point_unit wikiPageWikiLink Bitshift.
- Floating-point_unit wikiPageWikiLink Bitwise_operation.
- Floating-point_unit wikiPageWikiLink CORDIC.
- Floating-point_unit wikiPageWikiLink Category:Central_processing_unit.
- Floating-point_unit wikiPageWikiLink Category:Computer_arithmetic.
- Floating-point_unit wikiPageWikiLink Central_processing_unit.
- Floating-point_unit wikiPageWikiLink Clock_signal.
- Floating-point_unit wikiPageWikiLink Computer.
- Floating-point_unit wikiPageWikiLink Computer_architecture.
- Floating-point_unit wikiPageWikiLink Computer_clock.
- Floating-point_unit wikiPageWikiLink Coprocessor.
- Floating-point_unit wikiPageWikiLink Cyrix.
- Floating-point_unit wikiPageWikiLink Division_(mathematics).
- Floating-point_unit wikiPageWikiLink Embedded_processor.
- Floating-point_unit wikiPageWikiLink Embedded_system.
- Floating-point_unit wikiPageWikiLink Emulator.
- Floating-point_unit wikiPageWikiLink Execution_unit.
- Floating-point_unit wikiPageWikiLink Exponential_function.
- Floating-point_unit wikiPageWikiLink Fixed-point_arithmetic.
- Floating-point_unit wikiPageWikiLink Floating_point.
- Floating-point_unit wikiPageWikiLink IBM_Floating_Point_Architecture.
- Floating-point_unit wikiPageWikiLink IBM_PC.
- Floating-point_unit wikiPageWikiLink IBM_Personal_Computer.
- Floating-point_unit wikiPageWikiLink AT.
- Floating-point_unit wikiPageWikiLink IBM_Personal_Computer_XT.
- Floating-point_unit wikiPageWikiLink IEEE_floating-point_standard.
- Floating-point_unit wikiPageWikiLink IEEE_floating_point.
- Floating-point_unit wikiPageWikiLink Instruction_pipeline.
- Floating-point_unit wikiPageWikiLink Instruction_pipelining.
- Floating-point_unit wikiPageWikiLink Instruction_set.
- Floating-point_unit wikiPageWikiLink Integer.
- Floating-point_unit wikiPageWikiLink Integrated_circuit.
- Floating-point_unit wikiPageWikiLink Integrated_development_environment.
- Floating-point_unit wikiPageWikiLink Intel_80286.
- Floating-point_unit wikiPageWikiLink Intel_80386.
- Floating-point_unit wikiPageWikiLink Intel_80387SX.
- Floating-point_unit wikiPageWikiLink Library_(computing).
- Floating-point_unit wikiPageWikiLink Macintosh.
- Floating-point_unit wikiPageWikiLink Mathematical_operation.
- Floating-point_unit wikiPageWikiLink Microcode.
- Floating-point_unit wikiPageWikiLink Microcomputer.
- Floating-point_unit wikiPageWikiLink Microcomputers.
- Floating-point_unit wikiPageWikiLink Microcontroller.
- Floating-point_unit wikiPageWikiLink Motorola_68000_family.
- Floating-point_unit wikiPageWikiLink Motorola_68000_series.
- Floating-point_unit wikiPageWikiLink Motorola_68020.
- Floating-point_unit wikiPageWikiLink Motorola_68030.
- Floating-point_unit wikiPageWikiLink Motorola_68881.
- Floating-point_unit wikiPageWikiLink Multiplication.
- Floating-point_unit wikiPageWikiLink Object_code.
- Floating-point_unit wikiPageWikiLink Operating_system.
- Floating-point_unit wikiPageWikiLink Operation_(mathematics).
- Floating-point_unit wikiPageWikiLink Out-of-order_execution.
- Floating-point_unit wikiPageWikiLink Printed_circuit_board.
- Floating-point_unit wikiPageWikiLink Processor_register.
- Floating-point_unit wikiPageWikiLink SIMD.
- Floating-point_unit wikiPageWikiLink Single-board_computer.
- Floating-point_unit wikiPageWikiLink Square_root.
- Floating-point_unit wikiPageWikiLink Streaming_SIMD_Extensions.
- Floating-point_unit wikiPageWikiLink Subtraction.
- Floating-point_unit wikiPageWikiLink Sun-3.
- Floating-point_unit wikiPageWikiLink Sun_3.
- Floating-point_unit wikiPageWikiLink Superscalar.
- Floating-point_unit wikiPageWikiLink Superscalar_processor.
- Floating-point_unit wikiPageWikiLink Transcendental_function.
- Floating-point_unit wikiPageWikiLink Trigonometric.
- Floating-point_unit wikiPageWikiLink Trigonometry.
- Floating-point_unit wikiPageWikiLink User_space.
- Floating-point_unit wikiPageWikiLink Weitek.
- Floating-point_unit wikiPageWikiLink Workstation.
- Floating-point_unit wikiPageWikiLink X86.
- Floating-point_unit wikiPageWikiLink X86-64.
- Floating-point_unit wikiPageWikiLink X86_architecture.
- Floating-point_unit wikiPageWikiLink X87.
- Floating-point_unit wikiPageWikiLink File:KL_Intel_C80287.jpg.
- Floating-point_unit wikiPageWikiLinkText "FPU width".
- Floating-point_unit wikiPageWikiLinkText "FPU".
- Floating-point_unit wikiPageWikiLinkText "FPUs".
- Floating-point_unit wikiPageWikiLinkText "Floating Point Unit".
- Floating-point_unit wikiPageWikiLinkText "Floating-Point Unit (FPU)".
- Floating-point_unit wikiPageWikiLinkText "Floating-Point Unit".
- Floating-point_unit wikiPageWikiLinkText "Floating-point unit".