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Diffstat (limited to 'sys/contrib/ncsw/inc/math_ext.h')
| -rw-r--r-- | sys/contrib/ncsw/inc/math_ext.h | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/sys/contrib/ncsw/inc/math_ext.h b/sys/contrib/ncsw/inc/math_ext.h deleted file mode 100644 index 95b9560d8d60..000000000000 --- a/sys/contrib/ncsw/inc/math_ext.h +++ /dev/null @@ -1,98 +0,0 @@ -/* Copyright (c) 2008-2011 Freescale Semiconductor, Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * * Neither the name of Freescale Semiconductor nor the - * names of its contributors may be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * - * ALTERNATIVELY, this software may be distributed under the terms of the - * GNU General Public License ("GPL") as published by the Free Software - * Foundation, either version 2 of that License or (at your option) any - * later version. - * - * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY - * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef __MATH_EXT_H -#define __MATH_EXT_H - - -#if defined(NCSW_LINUX) && defined(__KERNEL__) -#include <linux/math.h> - -#elif defined(__MWERKS__) -#define LOW(x) ( sizeof(x)==8 ? *(1+(int32_t*)&x) : (*(int32_t*)&x)) -#define HIGH(x) (*(int32_t*)&x) -#define ULOW(x) ( sizeof(x)==8 ? *(1+(uint32_t*)&x) : (*(uint32_t*)&x)) -#define UHIGH(x) (*(uint32_t*)&x) - -static const double big = 1.0e300; - -/* Macro for checking if a number is a power of 2 */ -static __inline__ double ceil(double x) -{ - int32_t i0,i1,j0; /*- cc 020130 -*/ - uint32_t i,j; /*- cc 020130 -*/ - i0 = HIGH(x); - i1 = LOW(x); - j0 = ((i0>>20)&0x7ff)-0x3ff; - if(j0<20) { - if(j0<0) { /* raise inexact if x != 0 */ - if(big+x>0.0) {/* return 0*sign(x) if |x|<1 */ - if(i0<0) {i0=0x80000000;i1=0;} - else if((i0|i1)!=0) { i0=0x3ff00000;i1=0;} - } - } else { - i = (uint32_t)(0x000fffff)>>j0; - if(((i0&i)|i1)==0) return x; /* x is integral */ - if(big+x>0.0) { /* raise inexact flag */ - if(i0>0) i0 += (0x00100000)>>j0; - i0 &= (~i); i1=0; - } - } - } 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); /*- cc 020130 -*/ - if((i1&i)==0) return x; /* x is integral */ - if(big+x>0.0) { /* raise inexact flag */ - if(i0>0) { - if(j0==20) i0+=1; - else { - j = (uint32_t)(i1 + (1<<(52-j0))); - if(j<i1) i0+=1; /* got a carry */ - i1 = (int32_t)j; - } - } - i1 &= (~i); - } - } - HIGH(x) = i0; - LOW(x) = i1; - return x; -} - -#else -#include <math.h> -#endif /* defined(NCSW_LINUX) && defined(__KERNEL__) */ - - -#endif /* __MATH_EXT_H */ |