diff options
Diffstat (limited to 'libjava/classpath/native/fdlibm/s_rint.c')
-rw-r--r-- | libjava/classpath/native/fdlibm/s_rint.c | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/libjava/classpath/native/fdlibm/s_rint.c b/libjava/classpath/native/fdlibm/s_rint.c deleted file mode 100644 index fcd3916e824..00000000000 --- a/libjava/classpath/native/fdlibm/s_rint.c +++ /dev/null @@ -1,86 +0,0 @@ - -/* @(#)s_rint.c 1.3 95/01/18 */ -/* - * ==================================================== - * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. - * - * Developed at SunSoft, a Sun Microsystems, Inc. business. - * Permission to use, copy, modify, and distribute this - * software is freely granted, provided that this notice - * is preserved. - * ==================================================== - */ - -/* - * rint(x) - * Return x rounded to integral value according to the prevailing - * rounding mode. - * Method: - * Using floating addition. - * Exception: - * Inexact flag raised if x not equal to rint(x). - */ - -#include "fdlibm.h" - -#ifndef _DOUBLE_IS_32BITS - -#ifdef __STDC__ -static const double -#else -static double -#endif -TWO52[2]={ - 4.50359962737049600000e+15, /* 0x43300000, 0x00000000 */ - -4.50359962737049600000e+15, /* 0xC3300000, 0x00000000 */ -}; - -#ifdef __STDC__ - double rint(double x) -#else - double rint(x) - double x; -#endif -{ - int32_t i0,j0,sx; - uint32_t i,i1; - double t; - volatile double w; - EXTRACT_WORDS(i0,i1,x); - sx = (i0>>31)&1; - j0 = ((i0>>20)&0x7ff)-0x3ff; - if(j0<20) { - if(j0<0) { - if(((i0&0x7fffffff)|i1)==0) return x; - i1 |= (i0&0x0fffff); - i0 &= 0xfffe0000; - i0 |= ((i1|-i1)>>12)&0x80000; - SET_HIGH_WORD(x,i0); - w = TWO52[sx]+x; - t = w-TWO52[sx]; - GET_HIGH_WORD(i0,t); - SET_HIGH_WORD(t,(i0&0x7fffffff)|(sx<<31)); - return t; - } else { - i = (0x000fffff)>>j0; - if(((i0&i)|i1)==0) return x; /* x is integral */ - i>>=1; - if(((i0&i)|i1)!=0) { - if(j0==19) i1 = 0x40000000; else - i0 = (i0&(~i))|((0x20000)>>j0); - } - } - } else if (j0>51) { - if(j0==0x400) return x+x; /* inf or NaN */ - else return x; /* x is integral */ - } else { - i = ((uint32_t)(0xffffffff))>>(j0-20); - if((i1&i)==0) return x; /* x is integral */ - i>>=1; - if((i1&i)!=0) i1 = (i1&(~i))|((0x40000000)>>(j0-20)); - } - INSERT_WORDS(x,i0,i1); - w = TWO52[sx]+x; - return w-TWO52[sx]; -} -#endif /* _DOUBLE_IS_32BITS */ |