1.  /* bfs bfr in C
2.   *
3.   * header file
4.   *
5.   * Michal 'GiM' Spadlinski http://gim.org.pl/ gim@@at@@skrzynka@@dot@@pl
6.   */
7.  #ifndef __BSFR_H
8.  #define __BSFR_H
9.  
10.  #ifdef __cplusplus
11.  extern "C" {
12.  #endif
13.  
14.  /* returns first set bit of input using BSF
15.   * instruction from 386 assembler instruction set
16.   * or -1 of input equals 0
17.   */
18.  int bsf (unsigned long int input);
19.  
20.  /* returns last set bit of input using BSR
21.   * instruction from 386 assembler instruction set
22.   * or -1 if input equals 0
23.   */
24.  int bsr (unsigned long int input);
25.  
26.  #ifdef __cplusplus
27.  }
28.  #endif
29.  
30.  #endif

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