float.h (2623B)
1 /*- 2 * Copyright (c) 1989 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef _MACHINE_FLOAT_H_ 31 #define _MACHINE_FLOAT_H_ 1 32 33 extern int __flt_rounds(void); 34 35 #define FLT_RADIX 2 /* b */ 36 #define FLT_ROUNDS __flt_rounds() 37 #define FLT_EVAL_METHOD 0 /* SSE2 FP is strictly IEEE */ 38 #define DECIMAL_DIG 17 /* max precision in decimal digits */ 39 40 #define FLT_MANT_DIG 24 /* p */ 41 #define FLT_EPSILON 1.19209290E-07F /* b**(1-p) */ 42 #define FLT_DIG 6 /* floor((p-1)*log10(b))+(b == 10) */ 43 #define FLT_MIN_EXP (-125) /* emin */ 44 #define FLT_MIN 1.17549435E-38F /* b**(emin-1) */ 45 #define FLT_MIN_10_EXP (-37) /* ceil(log10(b**(emin-1))) */ 46 #define FLT_MAX_EXP 128 /* emax */ 47 #define FLT_MAX 3.40282347E+38F /* (1-b**(-p))*b**emax */ 48 #define FLT_MAX_10_EXP 38 /* floor(log10((1-b**(-p))*b**emax)) */ 49 50 #define DBL_MANT_DIG 53 51 #define DBL_EPSILON 2.2204460492503131E-16 52 #define DBL_DIG 15 53 #define DBL_MIN_EXP (-1021) 54 #define DBL_MIN 2.2250738585072014E-308 55 #define DBL_MIN_10_EXP (-307) 56 #define DBL_MAX_EXP 1024 57 #define DBL_MAX 1.7976931348623157E+308 58 #define DBL_MAX_10_EXP 308 59 60 #endif /* _MACHINE_FLOAT_H_ */