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add fmt_strm_alloca

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leitner 2008-06-23 07:24:22 +00:00
parent 6fd49579e8
commit 568131a018
1 changed files with 5 additions and 0 deletions
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5
fmt.h
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@ -93,4 +93,9 @@ char fmt_tohex(char c);
#define fmt_strm(b,...) fmt_strm_internal(b,__VA_ARGS__,(char*)0)
size_t fmt_strm_internal(char* dest,...);
#ifndef MAX_ALLOCA
#define MAX_ALLOCA 100000
#endif
#define fmt_strm_alloca(a,...) ({ size_t len=fmt_strm((char*)0,a,__VA_ARGS__)+1; char* c=(len<MAX_ALLOCA?alloca(len):0); if (c) c[fmt_strm(c,a,__VA_ARGS__)]=0; c;})
#endif