1/*********************************************************************** 2* * 3* This software is part of the ast package * 4* Copyright (c) 1985-2011 AT&T Intellectual Property * 5* and is licensed under the * 6* Common Public License, Version 1.0 * 7* by AT&T Intellectual Property * 8* * 9* A copy of the License is available at * 10* http://www.opensource.org/licenses/cpl1.0.txt * 11* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12* * 13* Information and Software Systems Research * 14* AT&T Research * 15* Florham Park NJ * 16* * 17* Glenn Fowler <gsf@research.att.com> * 18* David Korn <dgk@research.att.com> * 19* Phong Vo <kpv@research.att.com> * 20* * 21***********************************************************************/ 22/* 23 * used to test if -last requires -lm 24 * 25 * arch -last -lm 26 * ---- ----- --- 27 * linux.sparc sfdlen,sfputd frexp,ldexp 28 */ 29 30#if N >= 8 31#define _ISOC99_SOURCE 1 32#endif 33 34#include <math.h> 35 36int 37main() 38{ 39#if N & 1 40 long double value = 0; 41#else 42 double value = 0; 43#endif 44#if N < 5 45 int exp = 0; 46#endif 47 48#if N == 1 49 return ldexpl(value, exp) != 0; 50#endif 51#if N == 2 52 return ldexp(value, exp) != 0; 53#endif 54#if N == 3 55 return frexpl(value, &exp) != 0; 56#endif 57#if N == 4 58 return frexp(value, &exp) != 0; 59#endif 60#if N == 5 61 return isnan(value); 62#endif 63#if N == 6 64 return isnan(value); 65#endif 66#if N == 7 67 return copysign(1.0, value) < 0; 68#endif 69#if N == 8 70 return signbit(value); 71#endif 72} 73