Hi, I've trying to convert some floats using for a pic16 device and I've
been unable to make work any of the supplied routines, I'm using a pic
8722, stack and memory model large and I test the routines (because I
don't know how to make the work) with the following code that test
different values and presicions :
uchar i,p;
char buff[20];
float d[5];
d[0]=1.23456;
d[1]=2.34567;
d[2]=3.45678;
d[3]=4.56789;
d[4]=5.67890;
for (i=0;i<5;i++){
for(p=0;p<20;p++){
send_str("Valor ");
send_uchar(i);
send_str(" precision ");
send_uchar(p);
//x_ftoa(d[i],buff,19,p);
g_ftoa(buff,d[i],p);
send_str(" = ");
buff[19]=0;
send_str(buff);
send_nl();
}
}
I get only weird numbers with any value in the precision field as can be
shown in the following listing :
Valor 0 precision 1 = 0.06666722666666666
Valor 0 precision 2 = 0.06666723333333333
Valor 0 precision 3 = 0.07222257333333333
Valor 0 precision 4 = 0.07666724444444444
Valor 0 precision 5 = 0.07333373555555555
Valor 0 precision 6 = 0.06777852666666666
Valor 0 precision 7 = 0.07555655111111111
Valor 0 precision 8 = 0.07111151111111111
Valor 0 precision 9 = 0.07444485111111111
Valor 0 precision 10 = 0.00015611555555555
Valor 0 precision 11 = 0.00016047777777777
Valor 0 precision 12 = 0.00016502222222222
Valor 0 precision 13 = 0.00016500444444444
Valor 0 precision 14 = 0.00016724666666666
Valor 0 precision 15 = 0.00017233111111111
Valor 0 precision 16 = 0.00017367333333333
Valor 0 precision 17 = 0.00017611555555555
Valor 0 precision 18 = 0.00020043777777777
Valor 0 precision 19 = 0.00020614222222222
Valor 1 precision 0 = 0.07555611111111111
Valor 1 precision 1 = 0.06777833777777777
Valor 1 precision 2 = 0.07556124222222222
Valor 1 precision 3 = 0.07111146222222222
Valor 1 precision 4 = 0.07444482222222222
Valor 1 precision 5 = 0.06777836222222222
Valor 1 precision 6 = 0.07333372222222222
Valor 1 precision 7 = 0.07777837333333333
Valor 1 precision 8 = 0.07444484444444444
Valor 1 precision 9 = 0.07111153555555555
.......
I've seen in the manual that to have printf with float support I have to
recompile with '-DUSE_FLOATS=1', I've tried to add it to configure
scripts and Makefiles without success.
Can some of the masters give a hand ?
Olgierd
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