| /*- |

| * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org> |

| * Copyright (c) 2002, 2003 David Schultz <das@FreeBSD.ORG> |

| * All rights reserved. |

| * |

| * Redistribution and use in source and binary forms, with or without |

| * modification, are permitted provided that the following conditions |

| * are met: |

| * 1. Redistributions of source code must retain the above copyright |

| * notice, this list of conditions and the following disclaimer. |

| * 2. Redistributions in binary form must reproduce the above copyright |

| * notice, this list of conditions and the following disclaimer in the |

| * documentation and/or other materials provided with the distribution. |

| * |

| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |

| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |

| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |

| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |

| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |

| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |

| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |

| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |

| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |

| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |

| * SUCH DAMAGE. |

| * |

| * $FreeBSD: src/lib/libc/ia64/_fpmath.h,v 1.6 2005/03/07 04:55:40 das Exp $ |

| */ |

| |

| #include <sys/endian.h> |

| |

| union IEEEl2bits { |

| long double e; |

| struct { |

| #if _BYTE_ORDER == _LITTLE_ENDIAN |

| unsigned int manl :32; |

| unsigned int manh :32; |

| unsigned int exp :15; |

| unsigned int sign :1; |

| unsigned long junk :48; |

| #else /* _BIG_ENDIAN */ |

| unsigned long junk :48; |

| unsigned int sign :1; |

| unsigned int exp :15; |

| unsigned int manh :32; |

| unsigned int manl :32; |

| #endif |

| } bits; |

| }; |

| |

| #if _BYTE_ORDER == _LITTLE_ENDIAN |

| #define LDBL_NBIT 0x80000000 |

| #define mask_nbit_l(u) ((u).bits.manh &= ~LDBL_NBIT) |

| #else /* _BIG_ENDIAN */ |

| /* |

| * XXX This doesn't look right. Very few machines have a different |

| * endianness for integers and floating-point, and in nextafterl() |

| * we assume that none do. If you have an environment for testing |

| * this, please let me know. --das |

| */ |

| #define LDBL_NBIT 0x80 |

| #define mask_nbit_l(u) ((u).bits.manh &= ~LDBL_NBIT) |

| #endif |

| |

| #define LDBL_MANH_SIZE 32 |

| #define LDBL_MANL_SIZE 32 |

| |

| #define LDBL_TO_ARRAY32(u, a) do { \ |

| (a)[0] = (uint32_t)(u).bits.manl; \ |

| (a)[1] = (uint32_t)(u).bits.manh; \ |

| } while(0) |