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greg |
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#ifndef lint |
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static const char RCSid[] = "$Id$"; |
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greg |
2.1 |
#endif |
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/* |
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* Portable i/o for binary files |
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* |
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* External symbols declared in standard.h |
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*/ |
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/* ==================================================================== |
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* The Radiance Software License, Version 1.0 |
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* |
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* Copyright (c) 1990 - 2002 The Regents of the University of California, |
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* through Lawrence Berkeley National Laboratory. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. The end-user documentation included with the redistribution, |
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* if any, must include the following acknowledgment: |
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* "This product includes Radiance software |
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* (http://radsite.lbl.gov/) |
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* developed by the Lawrence Berkeley National Laboratory |
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* (http://www.lbl.gov/)." |
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* Alternately, this acknowledgment may appear in the software itself, |
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* if and wherever such third-party acknowledgments normally appear. |
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* |
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* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
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* and "The Regents of the University of California" must |
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* not be used to endorse or promote products derived from this |
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* software without prior written permission. For written |
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* permission, please contact [email protected]. |
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* |
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* 5. Products derived from this software may not be called "Radiance", |
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* nor may "Radiance" appear in their name, without prior written |
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* permission of Lawrence Berkeley National Laboratory. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This software consists of voluntary contributions made by many |
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* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
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* information on Lawrence Berkeley National Laboratory, please see |
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* <http://www.lbl.gov/>. |
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greg |
2.1 |
*/ |
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#include <stdio.h> |
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greg |
2.3 |
#ifndef frexp |
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extern double frexp(); |
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#endif |
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#ifndef ldexp |
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extern double ldexp(); |
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#endif |
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greg |
2.1 |
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greg |
2.3 |
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greg |
2.6 |
void |
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greg |
2.1 |
putstr(s, fp) /* write null-terminated string to fp */ |
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register char *s; |
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register FILE *fp; |
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{ |
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do |
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putc(*s, fp); |
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while (*s++); |
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} |
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2.6 |
void |
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2.1 |
putint(i, siz, fp) /* write a siz-byte integer to fp */ |
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long i; |
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register int siz; |
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register FILE *fp; |
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{ |
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while (siz--) |
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2.2 |
putc((int)(i>>(siz<<3) & 0xff), fp); |
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2.1 |
} |
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greg |
2.6 |
void |
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greg |
2.1 |
putflt(f, fp) /* put out floating point number */ |
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greg |
2.2 |
double f; |
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FILE *fp; |
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2.1 |
{ |
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int e; |
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putint((long)(frexp(f,&e)*0x7fffffff), 4, fp); |
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putint((long)e, 1, fp); |
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} |
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char * |
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getstr(s, fp) /* get null-terminated string */ |
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char *s; |
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register FILE *fp; |
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{ |
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register char *cp; |
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register int c; |
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cp = s; |
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while ((c = getc(fp)) != EOF) |
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if ((*cp++ = c) == '\0') |
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return(s); |
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return(NULL); |
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} |
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long |
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getint(siz, fp) /* get a siz-byte integer */ |
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int siz; |
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register FILE *fp; |
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{ |
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register int c; |
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register long r; |
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if ((c = getc(fp)) == EOF) |
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return(EOF); |
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r = 0x80&c ? -1<<8|c : c; /* sign extend */ |
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while (--siz > 0) { |
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if ((c = getc(fp)) == EOF) |
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return(EOF); |
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r <<= 8; |
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r |= c; |
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} |
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return(r); |
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} |
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double |
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getflt(fp) /* get a floating point number */ |
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FILE *fp; |
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{ |
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greg |
2.5 |
long l; |
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greg |
2.2 |
double d; |
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greg |
2.1 |
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greg |
2.5 |
l = getint(4, fp); |
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d = (l + (l > 0 ? .5 : -.5)) * (1./0x7fffffff); |
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greg |
2.1 |
return(ldexp(d, (int)getint(1, fp))); |
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} |