Matches 1 - 40 out of 40
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6792443 Economical on-the-fly rounding for digit-recurrence algorithms  
Apparatus and methods are provided for an improved on-the-fly rounding technique for digit-recurrence algorithms, such as division and square root calculations. According to one embodiment, only...
6405305 Rapid execution of floating point load control word instructions  
A microprocessor with a floating point unit configured to rapidly execute floating point load control word (FLDCW) type instructions in an out of program order context is disclosed. The floating...
6233672 Piping rounding mode bits with floating point instructions to eliminate serialization  
A floating point unit is provided which conveys the rounding mode in effect upon dispatch of a particular instruction with that particular instruction into the execution pipeline of the floating...
6141670 Apparatus and method useful for evaluating periodic functions  
A computer and a method of using the computer to reduce an original argument to obtain a periodic function of the argument. A special number P j is employed that is close to a nontrivial...
6134573 Apparatus and method for absolute floating point register addressing  
An apparatus and method for improving the execution of floating point instructions in a microprocessor is provided. During decode of a floating point instruction, translation logic generates...
6105047 Method and apparatus for trading performance for precision when processing denormal numbers in a computer system  
An apparatus to improve the speed of handling of denormal numbers in a computer system, the apparatus comprising a mode bit and a selector, the mode bit set when denormals are to be replaced by...
6029243 Floating-point processor with operand-format precision greater than execution precision  
A floating-point processor nominally capable of single and double, but not extended, precision execution stores operands in extended-precision format. A format converter converts single and double...
6021422 Partitioning of binary quad word format multiply instruction on S/390 processor  
There is a unique partitioning problem in determining how to execute the floating point multiply instruction defined by IEEE 754 standard for the quad word format on a S/390 processor. Several...
5761105 Reservation station including addressable constant store for a floating point processing unit  
A reservation station with an addressable constant store enables the provision of floating point constants to arithmetic units in a floating point unit of a superscalar processor. Floating point...
5740093 128-bit register file and 128-bit floating point load and store for quadruple precision compatibility  
A technique for providing adaptive 128-bit load and store operations to support architecture extensions for computations on a 128-bit quadruple precision format, in which a single set of load and...
5301137 Circuit for fixed point or floating point arithmetic operations  
An operation circuit for performing either fixed or floating point mathematical operations, having a mode control function for a multiplier including a multiplier, an arithmetic logic unit (ALU)...
5121351 Floating point arithmetic system  
A floating point arithmetic system including an operating processor for effecting the floating point operation, a memory device for storing data to be operated and a processing device for...
5068819 Floating point apparatus with concurrent input/output operations  
In a data processing system, a method for performing a series of operation sequence results and providing such results including the steps of (1) computing the results for each sequence of...
RE33629 Numeric data processor  
A floating point, integrated, arithmetic circuit is organized around a file format having a floating point numeric domain exceeding that of any single or double precision floating point numbers,...
5025407 Graphics floating point coprocessor having matrix capabilities  
A graphics coprocessor designed to work in conjunction with a host graphic processor in a graphics system. The coprocessor is adapted to perform arithmetic calculations including matrix...
4961162 Multiprocessing system for performing floating point arithmetic operations  
A data processing system including a first processor that performs fixed point arithmetic operations and a second processor that performs floating point arithmetic operations. These two processors...
4942547 Multiprocessors on a single semiconductor chip  
A data processing system includes the functionality of a commercial instruction processor, a scientific instruction processor and a basic instruction processor integrated into a single...
4916652 Dynamic multiple instruction stream multiple data multiple pipeline apparatus for floating-point single instruction stream single data architectures  
A dynamic multiple instruction stream, multiple data, multiple pipeline (MIMD) apparatus simultaneously executes more than one instruction associated with a multiple number of instruction streams...
4907185 Program-controlled computer with an interrupt capability for floating-point operation  
A program-controlled computer includes a first unit for executing an addition or a substraction on a first floating-point data and a second floating-point data inputted thereto, a second unit for...
4901235 Data processing system having unique multilevel microcode architecture  
A data processing system which includes a central processor unit which has an arithmetic logic unit (ALU) for performing fixed point arithmetic operations and a separate floating point unit (FPU)...
4870608 Method and apparatus for floating point operation  
Method and apparatus for floating point operation for calculating an approximate solution in a given argument of a function. An operation unit for carrying out floating point logical operation and...
4858163 Serial arithmetic processor  
A serial arithmetic processor arranged to perform the complex arithmetic functions of the Adaptive Differential Pulse Coded Modulation (ADPCM) algorithm. The serial arithmetic processor includes a...
4777613 Floating point numeric data processor  
A numeric data processor having an execution unit adapted to efficiently execute the complete set of floating point operations recommended by the IEEE Standard for Binary Floating-Point Arithmetic,...
4773035 Pipelined data processing system utilizing ideal floating point execution condition detection  
An instruction execution unit receives instructions and, in turn, provides a sequence of control words to specify the sequential processing of the operand data provided with the instruction. A...
4763294 Method and apparatus for floating point operations  
An information processing system having a memory for storing instructions and operands, a central processor unit which includes a mechanism for fetching and decoding instructions and operands and a...
4488252 Floating point addition architecture  
Parallel shifter architecture in an arithmetic unit of a digital computer for processing floating point mantissas. An arithmetic-logic unit (ALU) in series with shifting means functions in...
4476537 Fixed point and floating point computation units using commonly shared control fields  
A data processing system using separate fixed point and floating point computation units and a single control store means for controlling the operations of both units, the units being responsive to...
4476523 Fixed point and floating point computation units using commonly shared control fields  
A data processing system using separate fixed point and floating point computation units and a single control store means for controlling the operations of both units, the units being responsive to...
4413326 Floating point division control  
An improved means and method for accomplishing floating point calculations in computational apparatus includes a primary microprocessor and a secondary microprocessor, each with its own control...
4308589 Apparatus for performing the scientific add instruction  
The performance of a scientific ADD instruction is improved by storing the mantissas of both operands in each of two random access memories, selecting the mantissa with the smaller exponent,...
4295202 Hexadecimal digit shifter output control by a programmable read only memory  
A Scientific Instruction Processor (SIP) uses a Programmable Read Only Memory (PROM) to control the output of a two stage shifter. The shifter performs the necessary mantissa shift operations of...
4229801 Floating point processor having concurrent exponent/mantissa operation  
A Floating Point Processor or Floating Point Unit (FPU) with capability for performing exponent/sign-related calculations concurrently with mantissa-related calculations. The operation of the FPU...
4224682 Pointer for defining the data by controlling merge switches  
In a microprogrammed data processing system the throughput of the system is increased during the processing of decimal numeric instructions by apparatus which strips zone bits, sign, exponent and...
4217657 Floating point arithmetic control  
An improved means and method for accomplishing floating point calculations in computational apparatus includes a primary microprocessor and a secondary microprocessor each with its own control ROM....
4161784 Microprogrammable floating point arithmetic unit capable of performing arithmetic operations on long and short operands  
A scientific processing unit includes a microprogrammable arithmetic processing apparatus for performing floating point arithmetic operations with operands in long and short form. The apparatus...
4130879 Apparatus for performing floating point arithmetic operations using submultiple storage  
A scientific processing unit includes apparatus for performing floating point multiplication operations with operands in binary coded form. The apparatus is constructed from standard multibit LSI...
4054787 Apparatus for computing an arithmetically accumulated sequence of numbers  
Apparatus for computing an arithmetically accumulated sequence of exponenantissa formatted numbers, which comprises write-in apparatus and read-out apparatus. The write-in apparatus comprises means...
3319226 Data processor module for a modular data processing system for operation with a time-shared memory in the simultaneous execution of multi-tasks and multi-programs  
3131293 Computing system  
2973901 Digital computing engines  
Matches 1 - 40 out of 40