Cedric Roux
56c66c09aa
Pre-ci test passed git-svn-id: http://svn.eurecom.fr/openair4G/trunk@4000 818b1a75-f10b-46b9-bf7c-635c3b92a50f
31 lines
469 B
C
31 lines
469 B
C
unsigned char log2_approx(unsigned int x) {
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int i;
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unsigned char l2;
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l2=0;
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for (i=0;i<31;i++)
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if ((x&(1<<i)) != 0)
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l2 = i+1;
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//l2 = i;
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// printf("log2_approx = %d\n",l2);
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return(l2);
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}
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unsigned char log2_approx64(unsigned long long int x) {
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int i;
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unsigned char l2;
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l2=0;
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for (i=0;i<63;i++)
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if ((x&(((long long int) 1)<<i)) != 0)
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// l2 = i+1;
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l2 = i;
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// printf("log2_approx = %d\n",l2);
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return(l2);
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}
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