# | Line 24 | Line 24 | extern double getflt(); | |
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24 | extern long getint(); | |
25 | ||
26 | ||
27 | + | putambmagic(fp) /* write out ambient value magic number */ |
28 | + | FILE *fp; |
29 | + | { |
30 | + | putint((long)AMBMAGIC, 2, fp); |
31 | + | } |
32 | + | |
33 | + | |
34 | + | hasambmagic(fp) /* read in and check validity of magic # */ |
35 | + | FILE *fp; |
36 | + | { |
37 | + | register int magic; |
38 | + | |
39 | + | magic = getint(2, fp); |
40 | + | if (feof(fp)) |
41 | + | return(0); |
42 | + | return(magic == AMBMAGIC); |
43 | + | } |
44 | + | |
45 | + | |
46 | writambval(av, fp) /* write ambient value to stream */ | |
47 | register AMBVAL *av; | |
48 | FILE *fp; |
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