/* * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* Copyright (c) 1992, NeXT Computer, Inc. All rights reserved. * * File: libc/m98k/gen/fp.h * Author: Derek B Clegg, NeXT Computer, Inc. * * HISTORY * 11-Nov-92 Derek B Clegg (dclegg@next.com) * Created. * * Common definitions for floating-point numbers. */ /* The following definitions for for double precision IEEE format numbers. */ #define EXPONENT_BIAS 1023 #define SIGN_BITS 1 #define EXPONENT_BITS 11 #define FRACTION_BITS 52 #define HI_FRACTION_BITS 20 #define LO_FRACTION_BITS 32 struct double_format { unsigned sign: SIGN_BITS; unsigned exponent: EXPONENT_BITS; unsigned hi_fraction: HI_FRACTION_BITS; unsigned lo_fraction: LO_FRACTION_BITS; }; union dbl { struct double_format s; unsigned int u[2]; double value; }; #define PlusInfinity (1.0/0.0) #define MinusInfinity (-1.0/0.0) #define not_a_number(x) ((x) != (x)) #define positive_infinity(x) ((x) == PlusInfinity) #define negative_infinity(x) ((x) == MinusInfinity)