IEEE ISO IEC 60559 pdf free download

IEEE ISO IEC 60559 pdf free download.Floating-point arithmetic.
For the purposes of this standard, the following terms and definitions apply.
applicable attribute: The value of an attribute governing a particular instance of execution of a computational operation of this standard. Languages specify how the applicable attribute is determined.
arithmetic format: A floating-point format that can be used to represent floating-point operands or results for the operations of this standard.
attribute: An implicit parameter to operations of this standard, which a user might statically set in a programming language by specifying a constant value. The term attribute might refer to the parameter (as broundingdirectioI attribute”) or its value (as in “roundTowardZero attribute”).
basic format: One of five floating-point representations, three binary and two decimal, whose encodings are specified by this standard, and which can be used for arithmetic. One or more of the basic formats is implemented in any conforming implementation.
biased exponent: The sum of the exponent and a constant (bias) chosen to make the biased exponent’s range non-negative.
binary floating-point number: A floating-point number with radix two.
block: A language-defined syntactic unit for which a user can specify attributes. Language standards might provide means for users to specify attributes for blocks of varying scopes, even as large as an entire program and as small as a single operation.
canonical encoding: A preferred encoding of a floating-point representation in a format. “Canonical encoding” also applies to declets, significands of finite numbers, infinities, and NaNs, especially in decimal formats.
cohort: The set of all floating-point representations that represent a given floating-point number in a given floating-point format. In this context —O and +0 are considered distinct and are in different cohorts.
computational operation: An operation that produces floating-point results or that might signal floating- point exceptions. Computational operations produce results in floating-point or other destination formats by rounding them to fit if necessary.
correct rounding: This standard’s method of converting an infinitely precise result to a floating-point number, as determined by the applicable rounding direction. A floating-point number so obtained is said to be correctly rounded.
decimal floating-point number: A floating-point number with radix ten.
declet: An encoding of three decimal digits into ten bits using the densely packed decimal encoding scheme. Computational operations accept all 1024 possible declets in operands. Most computational operations produce only the 1000 canonical declets
denormalized nuniber: See: subnormal number.
destination: The location for the result of an operation upon one or more operands. A destination might be either explicitly designated by the user or implicitly supplied by the system (for example, intermediate results in subexpressions or arguments for procedures). Even though some languages place the results of intermediate calculations in destinations beyond the user’s control, this standard defines the result of an operation in terms of that destination’s format and the operands’ values.
dynamic mode: An optional method of dynamically setting attributes by means of operations of this standard to set, test, save, and restore them.
exception: An event that occurs when an operation on some particular operands has no outcome suitable for every reasonable application. That operation might signal an exception by invoking default exception handling or alternate exception handling. Exception handling might signal further exceptions. Recognize that event, exception, and signal are defined in diverse ways in different programming environments.IEEE ISO IEC 60559 pdf download.