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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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* External symbols declared in rtio.h |
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|
*/ |
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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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< |
*/ |
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> |
#include "copyright.h" |
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|
|
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#include <stdio.h> |
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> |
#include "rtio.h" |
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|
|
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#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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#include <math.h> |
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|
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|
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void |
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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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> |
putstr( /* write null-terminated string to fp */ |
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> |
char *s, |
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> |
FILE *fp |
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> |
) |
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|
{ |
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|
do |
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|
putc(*s, fp); |
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|
|
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|
|
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|
void |
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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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> |
putint( /* write a siz-byte integer to fp */ |
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> |
long i, |
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> |
int siz, |
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> |
FILE *fp |
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> |
) |
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|
{ |
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while (siz--) |
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putc((int)(i>>(siz<<3) & 0xff), fp); |
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> |
while (siz > sizeof(long)) { |
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> |
putc((i<0)*0xff, fp); |
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> |
siz--; |
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> |
} |
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> |
siz <<= 3; |
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> |
while ((siz -= 8) > 0) |
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> |
putc((int)(i>>siz & 0xff), fp); |
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> |
putc((int)(i & 0xff), fp); |
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|
} |
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|
|
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|
|
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|
void |
48 |
< |
putflt(f, fp) /* put out floating point number */ |
49 |
< |
double f; |
50 |
< |
FILE *fp; |
48 |
> |
putflt( /* put out floating point number */ |
49 |
> |
double f, |
50 |
> |
FILE *fp |
51 |
> |
) |
52 |
|
{ |
53 |
+ |
long m; |
54 |
|
int e; |
55 |
|
|
56 |
< |
putint((long)(frexp(f,&e)*0x7fffffff), 4, fp); |
57 |
< |
putint((long)e, 1, fp); |
56 |
> |
m = frexp(f, &e) * 0x7fffffff; |
57 |
> |
if (e > 127) { /* overflow */ |
58 |
> |
m = m > 0 ? (long)0x7fffffff : -(long)0x7fffffff; |
59 |
> |
e = 127; |
60 |
> |
} else if (e < -128) { /* underflow */ |
61 |
> |
m = 0; |
62 |
> |
e = 0; |
63 |
> |
} |
64 |
> |
putint(m, 4, fp); |
65 |
> |
putint(e, 1, fp); |
66 |
|
} |
67 |
|
|
68 |
|
|
69 |
+ |
size_t |
70 |
+ |
putbinary( /* fwrite() replacement for small objects */ |
71 |
+ |
const void *p, |
72 |
+ |
size_t elsiz, |
73 |
+ |
size_t nel, |
74 |
+ |
FILE *fp) |
75 |
+ |
{ |
76 |
+ |
const char *s = (const char *)p; |
77 |
+ |
size_t nbytes = elsiz*nel; |
78 |
+ |
|
79 |
+ |
if (nbytes > 128) |
80 |
+ |
return(fwrite(p, elsiz, nel, fp)); |
81 |
+ |
|
82 |
+ |
while (nbytes-- > 0) |
83 |
+ |
if (putc(*s++, fp) == EOF) |
84 |
+ |
return((elsiz*nel - nbytes)/elsiz); |
85 |
+ |
|
86 |
+ |
return(nel); |
87 |
+ |
} |
88 |
+ |
|
89 |
+ |
|
90 |
|
char * |
91 |
< |
getstr(s, fp) /* get null-terminated string */ |
92 |
< |
char *s; |
93 |
< |
register FILE *fp; |
91 |
> |
getstr( /* get null-terminated string */ |
92 |
> |
char *s, |
93 |
> |
FILE *fp |
94 |
> |
) |
95 |
|
{ |
96 |
< |
register char *cp; |
97 |
< |
register int c; |
96 |
> |
char *cp; |
97 |
> |
int c; |
98 |
|
|
99 |
|
cp = s; |
100 |
|
while ((c = getc(fp)) != EOF) |
106 |
|
|
107 |
|
|
108 |
|
long |
109 |
< |
getint(siz, fp) /* get a siz-byte integer */ |
110 |
< |
int siz; |
111 |
< |
register FILE *fp; |
109 |
> |
getint( /* get a siz-byte integer */ |
110 |
> |
int siz, |
111 |
> |
FILE *fp |
112 |
> |
) |
113 |
|
{ |
114 |
< |
register int c; |
115 |
< |
register long r; |
114 |
> |
int c; |
115 |
> |
long r; |
116 |
|
|
117 |
|
if ((c = getc(fp)) == EOF) |
118 |
|
return(EOF); |
119 |
< |
r = 0x80&c ? -1<<8|c : c; /* sign extend */ |
119 |
> |
r = c; |
120 |
> |
if (c & 0x80) /* sign extend? */ |
121 |
> |
r |= ~255L; |
122 |
|
while (--siz > 0) { |
123 |
|
if ((c = getc(fp)) == EOF) |
124 |
|
return(EOF); |
130 |
|
|
131 |
|
|
132 |
|
double |
133 |
< |
getflt(fp) /* get a floating point number */ |
134 |
< |
FILE *fp; |
133 |
> |
getflt( /* get a floating point number */ |
134 |
> |
FILE *fp |
135 |
> |
) |
136 |
|
{ |
137 |
|
long l; |
138 |
|
double d; |
139 |
|
|
140 |
|
l = getint(4, fp); |
141 |
+ |
if (l == EOF && feof(fp)) /* EOF? */ |
142 |
+ |
return((double)EOF); |
143 |
+ |
if (l == 0) { |
144 |
+ |
getc(fp); /* exactly zero -- ignore exponent */ |
145 |
+ |
return(0.0); |
146 |
+ |
} |
147 |
|
d = (l + (l > 0 ? .5 : -.5)) * (1./0x7fffffff); |
148 |
|
return(ldexp(d, (int)getint(1, fp))); |
149 |
+ |
} |
150 |
+ |
|
151 |
+ |
|
152 |
+ |
size_t |
153 |
+ |
getbinary( /* fread() replacement for small objects */ |
154 |
+ |
void *p, |
155 |
+ |
size_t elsiz, |
156 |
+ |
size_t nel, |
157 |
+ |
FILE *fp) |
158 |
+ |
{ |
159 |
+ |
char *s = (char *)p; |
160 |
+ |
size_t nbytes = elsiz*nel; |
161 |
+ |
int c; |
162 |
+ |
|
163 |
+ |
if (nbytes > 128) |
164 |
+ |
return(fread(p, elsiz, nel, fp)); |
165 |
+ |
|
166 |
+ |
while (nbytes-- > 0) { |
167 |
+ |
if ((c = getc(fp)) == EOF) |
168 |
+ |
return((elsiz*nel - nbytes)/elsiz); |
169 |
+ |
*s++ = c; |
170 |
+ |
} |
171 |
+ |
return(nel); |
172 |
|
} |