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* README: Document dependency on GNU libunistring. * benchmark-suite/Makefile.am (SCM_BENCHMARKS): Add `benchmark/bytevectors.bm'. * configure.in: Make sure we have libunistring; update $LIBS. * libguile.h: Include "bytevectors.h" and "r6rs-ports.h". * libguile/Makefile.am (libguile_la_SOURCES): Add `bytevectors.c' and `r6rs-ports.c' (DOT_X_FILES): Add `bytevectors.x' and `r6rs-ports.x'. (DOT_DOC_FILES): Add `bytevectors.doc' and `r6rs-ports.doc'. (noinst_HEADERS): Add `ieee-754.h'. (modinclude_HEADERS): Add `bytevectors.h' and `r6rs-ports.h' * libguile/validate.h (SCM_VALIDATE_BYTEVECTOR): New macro. * module/Makefile.am (SOURCES): Add $(RNRS_SOURCES). (RNRS_SOURCES): New variable. * test-suite/Makefile.am (SCM_TESTS): Add `bytevectors.test' and `r6rs-ports.test'.
90 lines
2.2 KiB
C
90 lines
2.2 KiB
C
/* Copyright (C) 1992, 1995, 1996, 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef SCM_IEEE_754_H
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#define SCM_IEEE_754_H 1
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/* Based on glibc's <ieee754.h> and modified by Ludovic Courtès to include
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all possible IEEE-754 double-precision representations. */
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/* IEEE 754 simple-precision format (32-bit). */
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union scm_ieee754_float
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{
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float f;
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struct
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{
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unsigned int negative:1;
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unsigned int exponent:8;
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unsigned int mantissa:23;
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} big_endian;
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struct
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{
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unsigned int mantissa:23;
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unsigned int exponent:8;
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unsigned int negative:1;
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} little_endian;
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};
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/* IEEE 754 double-precision format (64-bit). */
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union scm_ieee754_double
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{
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double d;
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struct
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{
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/* Big endian. */
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unsigned int negative:1;
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unsigned int exponent:11;
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/* Together these comprise the mantissa. */
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unsigned int mantissa0:20;
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unsigned int mantissa1:32;
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} big_endian;
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struct
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{
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/* Both byte order and word order are little endian. */
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/* Together these comprise the mantissa. */
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unsigned int mantissa1:32;
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unsigned int mantissa0:20;
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unsigned int exponent:11;
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unsigned int negative:1;
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} little_little_endian;
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struct
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{
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/* Byte order is little endian but word order is big endian. Not
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sure this is very wide spread. */
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unsigned int mantissa0:20;
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unsigned int exponent:11;
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unsigned int negative:1;
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unsigned int mantissa1:32;
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} little_big_endian;
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};
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#endif /* SCM_IEEE_754_H */
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