/**
* ilog - Integer logarithm.
*
- * ILOG_32() and ILOG_64() compute the minimum number of bits required to store
- * an unsigned 32-bit or 64-bit value without any leading zero bits.
+ * ilog_32() and ilog_64() compute the minimum number of bits required to store
+ * an unsigned 32-bit or 64-bit value without any leading zero bits.
+ *
* This can also be thought of as the location of the highest set bit, with
- * counting starting from one (so that 0 returns 0, 1 returns 1, and 2**31
- * returns 32).
- * When the value is known to be non-zero ILOGNZ_32() and ILOGNZ_64() can
- * compile into as few as two instructions, one of which may get optimized out
- * later.
+ * counting starting from one (so that 0 returns 0, 1 returns 1, and 2**31
+ * returns 32).
+ *
+ * When the value is known to be non-zero ilog32_nz() and ilog64_nz() can
+ * compile into as few as two instructions, one of which may get optimized out
+ * later.
+ *
* STATIC_ILOG_32 and STATIC_ILOG_64 allow computation on compile-time
- * constants, so other compile-time constants can be derived from them.
+ * constants, so other compile-time constants can be derived from them.
*
* Example:
* #include <stdio.h>
*
* int main(void){
* int i;
- * printf("ILOG_32(0x%08X)=%i\n",0,ILOG_32(0));
+ * printf("ilog32(0x%08X)=%i\n",0,ilog32(0));
* for(i=1;i<=STATIC_ILOG_32(USHRT_MAX);i++){
* uint32_t v;
- * v=(uint32_t)1U<<i-1;
- * //Here we know v is non-zero, so we can use ILOGNZ_32().
- * printf("ILOG_32(0x%08X)=%i\n",v,ILOGNZ_32(v));
+ * v=(uint32_t)1U<<(i-1);
+ * //Here we know v is non-zero, so we can use ilog32_nz().
+ * printf("ilog32(0x%08X)=%i\n",v,ilog32_nz(v));
* }
* return 0;
* }
*
- * License: LGPL (v2 or later)
+ * License: CC0 (Public domain)
+ * Author: Timothy B. Terriberry <tterribe@xiph.org>
*/
-#include <string.h>
#include "config.h"
+#include <string.h>
+#include <stdio.h>
int main(int _argc,const char *_argv[]){
/*Expect exactly one argument.*/
if(_argc!=2)return 1;
if(strcmp(_argv[1],"depends")==0){
- /*PRINTF-CCAN-PACKAGES-YOU-NEED-ONE-PER-LINE-IF-ANY*/
+ printf("ccan/compiler\n");
return 0;
}
return 1;