ISO/IEC 24747:2009 PDF

Name: ISO/IEC 24747:2009 — Information technology — Programming languages, their environments and system software interfaces — Extensions to the C Library to support mathematical special functions
SKU: ISO/IEC 24747:2009
Price: 25 EUR
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Information technology — Programming languages, their environments and system software interfaces — Extensions to the C Library to support mathematical special functions

Название (английский):

ISO/IEC 24747:2009

Information technology — Programming languages, their environments and system software interfaces — Extensions to the C Library to support mathematical special functions

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 25
Дата публикации:: 5 января 2009 г.
Издание:: ISO/IEC IS 24747 edition 1 version 1
ICS:: 35.060

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Описание (английский):

ISO/IEC 24747:2009 defines extensions to the C Standard Library that is defined in the International Standard for the C programming language (ISO/IEC 9899). Unless otherwise specified, the whole of the C Standard Library is included in ISO/IEC 24747:2009 by reference. ISO/IEC 24747:2009 defines library extensions to the C Standard Library to support Mathematical Special functions to be added to and .

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO/IEC 24747:2009 specifies standardized extensions to the C Standard Library (ISO/IEC 9899) to provide a consistent set of mathematical special functions for C programmers and library implementers. The standard adds function prototypes (with float, double and long double variants) to the headers **** and ****, and defines preprocessor controls for exposing these facilities in a portable way.

Key topics and technical requirements

Scope and relation to C: Extensions are defined by reference to ISO/IEC 9899; unless suppressed, the full C Standard Library is included.

Header additions: New function declarations are added to **** and **** when the macro STDC_WANT_MATH_SPEC_FUNCS is defined as 1 at inclusion time.

Conformance macro: Implementations may define STDC_MATH_SPEC_FUNCS (value 200808) to indicate conformance to this International Standard.

Function set: The standard lists numerous special functions, including (examples):

Bessel functions: cyl_bessel_i, cyl_bessel_j, cyl_bessel_k, cyl_neumann and spherical variants
Orthogonal polynomials: assoc_laguerre, assoc_legendre, hermite, laguerre, legendre, sph_legendre
Elliptic integrals: comp_ellint_1/2/3 and ellint_1/2/3 (complete and incomplete)
Special functions: beta, expint (exponential integral), riemann_zeta

Type variants: Each function is provided in three signatures (float, double, long double), following standard C naming conventions (e.g., func, funcf, funcl).

Error and NaN behavior: Functions must return NaN if any argument is NaN and follow the standard rules for reporting domain errors only where mathematically applicable.

Preprocessor consistency: STDC_WANT_MATH_SPEC_FUNCS must be defined identically for all inclusions of the special-function headers within a translation unit.

Applications - who uses this standard

Library and compiler implementers: To provide portable, standards-compliant math libraries for C runtime environments.

Scientific and numerical computing: Researchers and engineers who need reliable implementations of special functions (Bessel, Legendre, elliptic integrals, Riemann zeta) for simulations, signal processing, physics, and computational mathematics.

Cross-platform development: Developers writing portable C code that relies on advanced mathematical functionality can target ISO/IEC 24747:2009-compliant platforms for predictable behavior.

Embedded and high-assurance systems: Where conformance and well-defined behavior of mathematical functions are required.

Related standards

ISO/IEC 9899:1999 (and corrigenda) - The C programming language standard that ISO/IEC 24747 extends.

Header semantics also interact with standard C preprocessor macros and error-handling conventions defined in the C Standard.

Keywords: ISO/IEC 24747:2009, C Standard Library extensions, mathematical special functions, math.h, tgmath.h, Bessel, Legendre, Laguerre, elliptic integrals, Riemann zeta, numerical computing, C programming.

ISO/IEC 24747:2009 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications - who uses this standard

Related standards

Технические детали

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