| 4 |
|
/* |
| 5 |
|
* Portable i/o for binary files |
| 6 |
|
* |
| 7 |
< |
* External symbols declared in standard.h |
| 7 |
> |
* External symbols declared in rtio.h |
| 8 |
|
*/ |
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|
|
| 10 |
< |
/* ==================================================================== |
| 11 |
< |
* The Radiance Software License, Version 1.0 |
| 12 |
< |
* |
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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. |
| 15 |
< |
* |
| 16 |
< |
* Redistribution and use in source and binary forms, with or without |
| 17 |
< |
* modification, are permitted provided that the following conditions |
| 18 |
< |
* are met: |
| 19 |
< |
* |
| 20 |
< |
* 1. Redistributions of source code must retain the above copyright |
| 21 |
< |
* notice, this list of conditions and the following disclaimer. |
| 22 |
< |
* |
| 23 |
< |
* 2. Redistributions in binary form must reproduce the above copyright |
| 24 |
< |
* notice, this list of conditions and the following disclaimer in |
| 25 |
< |
* the documentation and/or other materials provided with the |
| 26 |
< |
* distribution. |
| 27 |
< |
* |
| 28 |
< |
* 3. The end-user documentation included with the redistribution, |
| 29 |
< |
* if any, must include the following acknowledgment: |
| 30 |
< |
* "This product includes Radiance software |
| 31 |
< |
* (http://radsite.lbl.gov/) |
| 32 |
< |
* developed by the Lawrence Berkeley National Laboratory |
| 33 |
< |
* (http://www.lbl.gov/)." |
| 34 |
< |
* Alternately, this acknowledgment may appear in the software itself, |
| 35 |
< |
* if and wherever such third-party acknowledgments normally appear. |
| 36 |
< |
* |
| 37 |
< |
* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
| 38 |
< |
* and "The Regents of the University of California" must |
| 39 |
< |
* not be used to endorse or promote products derived from this |
| 40 |
< |
* software without prior written permission. For written |
| 41 |
< |
* permission, please contact [email protected]. |
| 42 |
< |
* |
| 43 |
< |
* 5. Products derived from this software may not be called "Radiance", |
| 44 |
< |
* nor may "Radiance" appear in their name, without prior written |
| 45 |
< |
* permission of Lawrence Berkeley National Laboratory. |
| 46 |
< |
* |
| 47 |
< |
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| 48 |
< |
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 49 |
< |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 50 |
< |
* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
| 51 |
< |
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 52 |
< |
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 53 |
< |
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| 54 |
< |
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 55 |
< |
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 56 |
< |
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 57 |
< |
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 58 |
< |
* SUCH DAMAGE. |
| 59 |
< |
* ==================================================================== |
| 60 |
< |
* |
| 61 |
< |
* This software consists of voluntary contributions made by many |
| 62 |
< |
* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
| 63 |
< |
* information on Lawrence Berkeley National Laboratory, please see |
| 64 |
< |
* <http://www.lbl.gov/>. |
| 65 |
< |
*/ |
| 10 |
> |
#include "copyright.h" |
| 11 |
|
|
| 12 |
< |
#include <stdio.h> |
| 12 |
> |
#include "rtio.h" |
| 13 |
|
|
| 14 |
< |
#ifndef frexp |
| 15 |
< |
extern double frexp(); |
| 14 |
> |
#include <math.h> |
| 15 |
> |
|
| 16 |
> |
#ifdef getc_unlocked /* avoid horrendous overhead of flockfile */ |
| 17 |
> |
#undef getc |
| 18 |
> |
#undef putc |
| 19 |
> |
#define getc getc_unlocked |
| 20 |
> |
#define putc putc_unlocked |
| 21 |
|
#endif |
| 72 |
– |
#ifndef ldexp |
| 73 |
– |
extern double ldexp(); |
| 74 |
– |
#endif |
| 22 |
|
|
| 23 |
|
|
| 24 |
|
void |
| 48 |
|
double f; |
| 49 |
|
FILE *fp; |
| 50 |
|
{ |
| 51 |
+ |
long m; |
| 52 |
|
int e; |
| 53 |
|
|
| 54 |
< |
putint((long)(frexp(f,&e)*0x7fffffff), 4, fp); |
| 54 |
> |
m = frexp(f, &e) * 0x7fffffff; |
| 55 |
> |
if (e > 127) { /* overflow */ |
| 56 |
> |
m = m > 0 ? (long)0x7fffffff : -(long)0x7fffffff; |
| 57 |
> |
e = 127; |
| 58 |
> |
} else if (e < -128) { /* underflow */ |
| 59 |
> |
m = 0; |
| 60 |
> |
e = 0; |
| 61 |
> |
} |
| 62 |
> |
putint(m, 4, fp); |
| 63 |
|
putint((long)e, 1, fp); |
| 64 |
|
} |
| 65 |
|
|
| 110 |
|
double d; |
| 111 |
|
|
| 112 |
|
l = getint(4, fp); |
| 113 |
+ |
if (l == 0) { |
| 114 |
+ |
getc(fp); /* exactly zero -- ignore exponent */ |
| 115 |
+ |
return(0.0); |
| 116 |
+ |
} |
| 117 |
|
d = (l + (l > 0 ? .5 : -.5)) * (1./0x7fffffff); |
| 118 |
|
return(ldexp(d, (int)getint(1, fp))); |
| 119 |
|
} |
