| podobné slovo | definícia |
floatingpoint
(mass) | floating-point
- pohyblivá čiarka |
floating-point
(encz) | floating-point,pohyblivá čárka n: Zdeněk Brož |
floating-point notation
(encz) | floating-point notation, n: |
floating-point number
(encz) | floating-point number, n: |
floating-point operation
(encz) | floating-point operation, n: |
floating-point representation system
(encz) | floating-point representation system, n: |
floating-point notation
(wn) | floating-point notation
n 1: a radix numeration system in which the location of the
decimal point is indicated by an exponent of the radix; in
the floating-point representation system, 0.0012 is
represented as 0.12-2 where -2 is the exponent [syn:
floating-point notation, {floating-point representation
system}] |
floating-point number
(wn) | floating-point number
n 1: a number represented in floating-point notation |
floating-point operation
(wn) | floating-point operation
n 1: an arithmetic operation performed on floating-point
numbers; "this computer can perform a million flops per
second" [syn: floating-point operation, flop] |
floating-point representation system
(wn) | floating-point representation system
n 1: a radix numeration system in which the location of the
decimal point is indicated by an exponent of the radix; in
the floating-point representation system, 0.0012 is
represented as 0.12-2 where -2 is the exponent [syn:
floating-point notation, {floating-point representation
system}] |
floating-point
(foldoc) | floating-point
A number representation consisting
of a mantissa, M, an exponent, E, and a radix (or
"base"). The number represented is M*R^E where R is the
radix.
In science and engineering, exponential notation or
scientific notation uses a radix of ten so, for example, the
number 93,000,000 might be written 9.3 x 10^7 (where ^7 is
superscript 7).
In computer hardware, floating point numbers are usually
represented with a radix of two since the mantissa and
exponent are stored in binary, though many different
representations could be used. The IEEE specify a
standard representation which is used by many hardware
floating-point systems. Non-zero numbers are normalised so
that the binary point is immediately before the most
significant bit of the mantissa. Since the number is
non-zero, this bit must be a one so it need not be stored. A
fixed "bias" is added to the exponent so that positive and
negative exponents can be represented without a sign bit.
Finally, extreme values of exponent (all zeros and all ones)
are used to represent special numbers like zero and positive
and negative infinity.
In programming languages with explicit typing,
floating-point types are introduced with the keyword "float"
or sometimes "double" for a higher precision type.
See also floating-point accelerator, floating-point unit.
Opposite: fixed-point.
(2008-06-13)
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floating-point accelerator
(foldoc) | floating-point accelerator
(FPA) Additional hardware to perform functions on
floating point numbers such as addition, multiplication,
logarithms, exponentials, trigonometric functions and
various kinds of rounding and error detection. A floating
point accelerator often functions as a co-processor to the
CPU.
The term "floating-point accelerator" suggests a physically
larger system, often an extra circuit board, whereas a
"floating-point unit" is probably a single chip or even part
of a chip.
(1994-12-01)
|
floating-point specbaserate
(foldoc) | SPECrate_base_fp92
Floating-Point SPECbaserate
A variant of SPECrate_fp92 that reports
"baseline" results, using stricter run rules.
(1994-11-15)
|
floating-point specbaseratio
(foldoc) | SPECbase_fp92
Floating-Point SPECbaseratio
A variant of SPECfp92 that reports "baseline" results, using
stricter run rules.
(1994-11-14)
|
floating-point specrate
(foldoc) | SPECrate_fp92
Floating-Point SPECrate
A benchmark result derived from the results of a
set of floating-point benchmarks (the geometric mean of 14
SPEC rates from CFP92) run multiple times simultaneously,
which can be used to estimate a machine's overall
multi-tasking throughput for floating-point code. It is
typically used on multiprocessor machines.
SPECrate_fp92 obsoletes SPECfpThruput89.
(1994-11-14)
|
floating-point specratio
(foldoc) | SPECfp92
Floating-Point SPECratio
A benchmark result derived from the results of a
set of CPU intensive floating-point benchmarks from SPEC
(the geometric mean of the 14 SPEC ratios of CFP92).
SPECfp92 can be used to estimate a machine's single-tasking
performance on floating-point code.
Results (ftp://ftp.nosc.mil/pub/aburto/specfp92.tbl).
(1994-11-14)
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floating-point unit
(foldoc) | Floating-Point Unit
(FPU) A floating-point accelerator, usually in a
single integrated circuit, possible on the same IC as the
central processing unit.
(1994-10-27)
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