1da2e3ebdSchin /*********************************************************************** 2da2e3ebdSchin * * 3da2e3ebdSchin * This software is part of the ast package * 4*b30d1939SAndy Fiddaman * Copyright (c) 1985-2011 AT&T Intellectual Property * 5da2e3ebdSchin * and is licensed under the * 6*b30d1939SAndy Fiddaman * Eclipse Public License, Version 1.0 * 77c2fbfb3SApril Chin * by AT&T Intellectual Property * 8da2e3ebdSchin * * 9da2e3ebdSchin * A copy of the License is available at * 10*b30d1939SAndy Fiddaman * http://www.eclipse.org/org/documents/epl-v10.html * 11*b30d1939SAndy Fiddaman * (with md5 checksum b35adb5213ca9657e911e9befb180842) * 12da2e3ebdSchin * * 13da2e3ebdSchin * Information and Software Systems Research * 14da2e3ebdSchin * AT&T Research * 15da2e3ebdSchin * Florham Park NJ * 16da2e3ebdSchin * * 17da2e3ebdSchin * Glenn Fowler <gsf@research.att.com> * 18da2e3ebdSchin * David Korn <dgk@research.att.com> * 19da2e3ebdSchin * Phong Vo <kpv@research.att.com> * 20da2e3ebdSchin * * 21da2e3ebdSchin ***********************************************************************/ 22da2e3ebdSchin /* 23da2e3ebdSchin * used to test if -last requires -lm 24da2e3ebdSchin * 25da2e3ebdSchin * arch -last -lm 26da2e3ebdSchin * ---- ----- --- 27da2e3ebdSchin * linux.sparc sfdlen,sfputd frexp,ldexp 28da2e3ebdSchin */ 29da2e3ebdSchin 307c2fbfb3SApril Chin #if N >= 8 317c2fbfb3SApril Chin #define _ISOC99_SOURCE 1 327c2fbfb3SApril Chin #endif 337c2fbfb3SApril Chin 34da2e3ebdSchin #include <math.h> 35da2e3ebdSchin 36da2e3ebdSchin int main()37da2e3ebdSchinmain() 38da2e3ebdSchin { 39da2e3ebdSchin #if N & 1 40da2e3ebdSchin long double value = 0; 41da2e3ebdSchin #else 42da2e3ebdSchin double value = 0; 43da2e3ebdSchin #endif 44da2e3ebdSchin #if N < 5 45da2e3ebdSchin int exp = 0; 46da2e3ebdSchin #endif 47da2e3ebdSchin 48da2e3ebdSchin #if N == 1 49da2e3ebdSchin return ldexpl(value, exp) != 0; 50da2e3ebdSchin #endif 51da2e3ebdSchin #if N == 2 52da2e3ebdSchin return ldexp(value, exp) != 0; 53da2e3ebdSchin #endif 54da2e3ebdSchin #if N == 3 55da2e3ebdSchin return frexpl(value, &exp) != 0; 56da2e3ebdSchin #endif 57da2e3ebdSchin #if N == 4 58da2e3ebdSchin return frexp(value, &exp) != 0; 59da2e3ebdSchin #endif 60da2e3ebdSchin #if N == 5 61da2e3ebdSchin return isnan(value); 62da2e3ebdSchin #endif 63da2e3ebdSchin #if N == 6 64da2e3ebdSchin return isnan(value); 65da2e3ebdSchin #endif 667c2fbfb3SApril Chin #if N == 7 677c2fbfb3SApril Chin return copysign(1.0, value) < 0; 687c2fbfb3SApril Chin #endif 697c2fbfb3SApril Chin #if N == 8 707c2fbfb3SApril Chin return signbit(value); 717c2fbfb3SApril Chin #endif 72da2e3ebdSchin } 73