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 * 3. 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 * $FreeBSD$ 31 */ 32 33 #ifndef _MACHINE_FLOAT_H_ 34 #define _MACHINE_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 #define FLT_EVAL_METHOD 0 46 #define DECIMAL_DIG 17 /* max precision in decimal digits */ 47 #endif 48 49 #define FLT_MANT_DIG 24 /* p */ 50 #define FLT_EPSILON 1.19209290E-07F /* b**(1-p) */ 51 #define FLT_DIG 6 /* floor((p-1)*log10(b))+(b == 10) */ 52 #define FLT_MIN_EXP (-125) /* emin */ 53 #define FLT_MIN 1.17549435E-38F /* b**(emin-1) */ 54 #define FLT_MIN_10_EXP (-37) /* ceil(log10(b**(emin-1))) */ 55 #define FLT_MAX_EXP 128 /* emax */ 56 #define FLT_MAX 3.40282347E+38F /* (1-b**(-p))*b**emax */ 57 #define FLT_MAX_10_EXP 38 /* floor(log10((1-b**(-p))*b**emax)) */ 58 #if __ISO_C_VISIBLE >= 2011 59 #define FLT_TRUE_MIN 1.40129846E-45F /* b**(emin-p) */ 60 #define FLT_DECIMAL_DIG 9 /* ceil(1+p*log10(b)) */ 61 #define FLT_HAS_SUBNORM 1 62 #endif /* __ISO_C_VISIBLE >= 2011 */ 63 64 #define DBL_MANT_DIG 53 65 #define DBL_EPSILON 2.2204460492503131E-16 66 #define DBL_DIG 15 67 #define DBL_MIN_EXP (-1021) 68 #define DBL_MIN 2.2250738585072014E-308 69 #define DBL_MIN_10_EXP (-307) 70 #define DBL_MAX_EXP 1024 71 #define DBL_MAX 1.7976931348623157E+308 72 #define DBL_MAX_10_EXP 308 73 #if __ISO_C_VISIBLE >= 2011 74 #define DBL_TRUE_MIN 4.9406564584124654E-324 75 #define DBL_DECIMAL_DIG 17 76 #define DBL_HAS_SUBNORM 1 77 #endif /* __ISO_C_VISIBLE >= 2011 */ 78 79 #define LDBL_MANT_DIG DBL_MANT_DIG 80 #define LDBL_EPSILON ((long double)DBL_EPSILON) 81 #define LDBL_DIG DBL_DIG 82 #define LDBL_MIN_EXP DBL_MIN_EXP 83 #define LDBL_MIN ((long double)DBL_MIN) 84 #define LDBL_MIN_10_EXP DBL_MIN_10_EXP 85 #define LDBL_MAX_EXP DBL_MAX_EXP 86 #define LDBL_MAX ((long double)DBL_MAX) 87 #define LDBL_MAX_10_EXP DBL_MAX_10_EXP 88 #if __ISO_C_VISIBLE >= 2011 89 #define LDBL_TRUE_MIN ((long double)DBL_TRUE_MIN) 90 #define LDBL_DECIMAL_DIG DBL_DECIMAL_DIG 91 #define LDBL_HAS_SUBNORM DBL_HAS_SUBNORM 92 #endif /* __ISO_C_VISIBLE >= 2011 */ 93 94 #if 0 /* RISCVTODO */ 95 #define LDBL_MANT_DIG 113 96 #define LDBL_EPSILON 1.925929944387235853055977942584927319E-34L 97 #define LDBL_DIG 33 98 #define LDBL_MIN_EXP (-16381) 99 #define LDBL_MIN 3.362103143112093506262677817321752603E-4932L 100 #define LDBL_MIN_10_EXP (-4931) 101 #define LDBL_MAX_EXP (+16384) 102 #define LDBL_MAX 1.189731495357231765085759326628007016E+4932L 103 #define LDBL_MAX_10_EXP (+4932) 104 #if __ISO_C_VISIBLE >= 2011 105 #define LDBL_TRUE_MIN 6.475175119438025110924438958227646552E-4966L 106 #define LDBL_DECIMAL_DIG 36 107 #define LDBL_HAS_SUBNORM 1 108 #endif /* __ISO_C_VISIBLE >= 2011 */ 109 #endif 110 111 #endif /* _MACHINE_FLOAT_H_ */ 112