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 * from: @(#)float.h 7.1 (Berkeley) 5/8/90 30 * $FreeBSD: head/sys/x86/include/float.h 235939 2012-05-24 21:44:46Z obrien $ 31 */ 32 33 #ifndef _FLOAT_H_ 34 #define _FLOAT_H_ 35 36 #include <sys/cdefs.h> 37 38 __BEGIN_DECLS 39 extern int __flt_rounds(void); 40 __END_DECLS 41 42 #define FLT_RADIX 2 /* b */ 43 #define FLT_ROUNDS __flt_rounds() 44 #if __ISO_C_VISIBLE >= 1999 45 #ifdef __LP64__ 46 #define FLT_EVAL_METHOD 0 /* no promotions */ 47 #else 48 #define FLT_EVAL_METHOD (-1) /* i387 semantics are...interesting */ 49 #endif 50 #define DECIMAL_DIG 21 /* max precision in decimal digits */ 51 #endif 52 53 #define FLT_MANT_DIG 24 /* p */ 54 #define FLT_EPSILON 1.19209290E-07F /* b**(1-p) */ 55 #define FLT_DIG 6 /* floor((p-1)*log10(b))+(b == 10) */ 56 #define FLT_MIN_EXP (-125) /* emin */ 57 #define FLT_MIN 1.17549435E-38F /* b**(emin-1) */ 58 #define FLT_MIN_10_EXP (-37) /* ceil(log10(b**(emin-1))) */ 59 #define FLT_MAX_EXP 128 /* emax */ 60 #define FLT_MAX 3.40282347E+38F /* (1-b**(-p))*b**emax */ 61 #define FLT_MAX_10_EXP 38 /* floor(log10((1-b**(-p))*b**emax)) */ 62 #if __ISO_C_VISIBLE >= 2011 63 #define FLT_TRUE_MIN 1.40129846E-45F /* b**(emin-p) */ 64 #define FLT_DECIMAL_DIG 9 /* ceil(1+p*log10(b)) */ 65 #define FLT_HAS_SUBNORM 1 66 #endif /* __ISO_C_VISIBLE >= 2011 */ 67 68 #define DBL_MANT_DIG 53 69 #define DBL_EPSILON 2.2204460492503131E-16 70 #define DBL_DIG 15 71 #define DBL_MIN_EXP (-1021) 72 #define DBL_MIN 2.2250738585072014E-308 73 #define DBL_MIN_10_EXP (-307) 74 #define DBL_MAX_EXP 1024 75 #define DBL_MAX 1.7976931348623157E+308 76 #define DBL_MAX_10_EXP 308 77 #if __ISO_C_VISIBLE >= 2011 78 #define DBL_TRUE_MIN 4.9406564584124654E-324 79 #define DBL_DECIMAL_DIG 17 80 #define DBL_HAS_SUBNORM 1 81 #endif /* __ISO_C_VISIBLE >= 2011 */ 82 83 #define LDBL_MANT_DIG 64 84 #define LDBL_EPSILON 1.0842021724855044340E-19L 85 #define LDBL_DIG 18 86 #define LDBL_MIN_EXP (-16381) 87 #define LDBL_MIN 3.3621031431120935063E-4932L 88 #define LDBL_MIN_10_EXP (-4931) 89 #define LDBL_MAX_EXP 16384 90 #define LDBL_MAX 1.1897314953572317650E+4932L 91 #define LDBL_MAX_10_EXP 4932 92 #if __ISO_C_VISIBLE >= 2011 93 #define LDBL_TRUE_MIN 3.6451995318824746025E-4951L 94 #define LDBL_DECIMAL_DIG 21 95 #define LDBL_HAS_SUBNORM 1 96 #endif /* __ISO_C_VISIBLE >= 2011 */ 97 98 #endif /* _FLOAT_H_ */ 99