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new file mode 100644 |
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@@ -0,0 +1,45 @@ |
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+int num2str(int num, char *str, unsigned int minlen, unsigned int maxlen) |
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+{ |
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+ unsigned int i,d,n,k; |
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+ /* sanity check */ |
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+ if(num<0 || minlen==0 || maxlen==0) { |
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+ *str='\0'; |
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+ return(0); |
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+ } |
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+ /* safe method to get the divisor */ |
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+ for(n=d=1,i=1;i<maxlen && !(d>1 && (d/n)!=10);i++,n=d,d*=10) |
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+ ; |
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+ if(d>1 && (d/n)!=10) { |
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+ i--; |
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+ d=n; |
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+ } |
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+ /* extract the digits */ |
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+ for(k=0;d>0;i--,d/=10) { |
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+ n=(((unsigned int)num)/d)%10; |
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+ if(n!=0 || minlen>=i) { |
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+ str[k++]=n+'0'; |
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+ minlen=i; |
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+ } |
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+ } |
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+ /* terminate string */ |
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+ str[k]='\0'; |
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+ return(k); |
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+} |
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+ |
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+ |
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+int hexnum2str(int hexnum, char *str, unsigned int numdigits) |
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+{ |
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+ int k,s; |
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+ int c; |
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+ if(hexnum<0 || numdigits==0) { |
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+ *str='\0'; |
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+ return(0); |
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+ } |
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+ for(k=0,s=(numdigits-1)*4;k<numdigits;k++,s-=4) { |
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+ c=(((unsigned int)hexnum)>>s)&0xf; |
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+ str[k]=((c<10)?(c+'0'):(c+'a'-10)); |
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+ } |
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+ str[k]='\0'; |
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+ return(k); |
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+} |
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+ |