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	bgetd.c - 9base - revived minimalist port of Plan 9 userland to Unix
	git clone git://git.suckless.org/9base
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	---
	bgetd.c (383B)
	---
	1 #include "lib9.h"
	2 #include <bio.h>
	3
	4 struct bgetd
	5 {
	6 Biobuf* b;
	7 int eof;
	8 };
	9
	10 static int
	11 Bgetdf(void *vp)
	12 {
	13 int c;
	14 struct bgetd *bg = vp;
	15
	16 c = Bgetc(bg->b);
	17 if(c == Beof)
	18 bg->eof = 1;
	19 return c;
	20 }
	21
	22 int
	23 Bgetd(Biobuf bp, double dp)
	24 {
	25 double d;
	26 struct bgetd b;
	27
	28 b.b = bp;
	29 b.eof = 0;
	30 d = fmtcharstod(Bgetdf, &b);
	31 if(b.eof)
	32 return -1;
	33 Bungetc(bp);
	34 *dp = d;
	35 return 1;
	36 }