TECHNICAL ISO/IEC TS SPECIFICATION 18661-3 First edition 2015-10-01 Information Technology - Programming languages, their environments, and system software interfaces Floating-point extensions for C - Part 3: Interchange and extended types Technologies de I'information - Langages de programmation, leurs environnements et interfaces du logiciel systeme - Extensions a virgule flottante pour C- Partie 3: Types d'échange et étendus Reference number IS0/IEC TS 18661-3:2015(E) IEC . International Organization for Standardization ardization 5956617 @IS0/IEC2015 I without license from IHS IS0/IECTS 18661-3:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS0/IEC 2015, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Intenationaibr PrganizationforStandardization Not for Resale, 2015/11/30 07:25:51 etworking permitted without license from IHS IS0/IEC TS 18661-3:2015(E) Foreword, Introductior vi 1 Scope 2 Conformance. 3 Normative references 4 Terms and definitions . 5 C standard conformance 5.1 Freestanding implementations... 5.2 Predefined macros.... 5.3 Standardheaders 6 Types 7 Characteristics 13 8 Conversions... 9 Constants 10 Expressions.. 22 11 .Non..arithmetic interchange formats... 12 Mathematics <math.h> .23 12.1 Macros..... 12.2 Floating-point environment.... 12.3 31 12.4 Encoding conversion functions... .42 13 Numeric conversion functions in <stdlib.h> 45 14 Complex arithmetic <complex.h> .51 15 Type-generic macros <tgmath.h: ..54 Bibliography.. 58 iii without license from IHS