1 /* $NetBSD: fenv.h,v 1.1 2011/01/31 00:19:34 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2004-2005 David Schultz <das@FreeBSD.ORG> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #ifndef _SPARC64_FENV_H_ 32 #define _SPARC64_FENV_H_ 33 34 #include <sys/stdint.h> 35 36 typedef uint64_t fenv_t; 37 typedef uint64_t fexcept_t; 38 39 /* 40 * Exception flags 41 * 42 * Symbols are defined in such a way, to correspond to the accrued 43 * exception bits (aexc) fields of FSR. 44 */ 45 #define FE_INEXACT 0x00000020 /* 0000100000 */ 46 #define FE_DIVBYZERO 0x00000040 /* 0001000000 */ 47 #define FE_UNDERFLOW 0x00000080 /* 0010000000 */ 48 #define FE_OVERFLOW 0x00000100 /* 0100000000 */ 49 #define FE_INVALID 0x00000200 /* 1000000000 */ 50 51 #define FE_ALL_EXCEPT (FE_DIVBYZERO | FE_INEXACT | \ 52 FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW) 53 54 /* 55 * Rounding modes 56 * 57 * We can't just use the hardware bit values here, because that would 58 * make FE_UPWARD and FE_DOWNWARD negative, which is not allowed. 59 */ 60 #define FE_TONEAREST 0x0 61 #define FE_TOWARDZERO 0x1 62 #define FE_UPWARD 0x2 63 #define FE_DOWNWARD 0x3 64 #define _ROUND_MASK (FE_TONEAREST | FE_DOWNWARD | \ 65 FE_UPWARD | FE_TOWARDZERO) 66 #define _ROUND_SHIFT 30 67 68 __BEGIN_DECLS 69 70 /* Default floating-point environment */ 71 extern const fenv_t __fe_dfl_env; 72 #define FE_DFL_ENV (&__fe_dfl_env) 73 74 /* We need to be able to map status flag positions to mask flag positions */ 75 #define _FPUSW_SHIFT 18 76 #define _ENABLE_MASK (FE_ALL_EXCEPT << _FPUSW_SHIFT) 77 78 __END_DECLS 79 80 #endif /* !_SPARC64_FENV_H_ */ 81