rexexp (c version)

#include <stdio.h>
#include <regex.h>

#define NUM_MATCHES 2

char data[] = "aaaaaaaaaaaaasdffffffffffffffsdfsdfdsfsdfsdfsdfffffffffff 11111 sdfsdfsdfsf aasdfa xxx zzz0bbb-3345sdfsfdsxxxxxxxxxxxxxxxxxxxxxx";

int main(void)
{
  regex_t preg;
  regmatch_t pmatch[NUM_MATCHES];
  regcomp( &preg, "b+-([0-9]+)", REG_EXTENDED );

  int i;
  for( i = 0; i < 1000000; i++ )
  {
    regexec (&preg, data, NUM_MATCHES, pmatch, 0);
  }
  printf( "%d %d\n", pmatch[ 1 ].rm_so, pmatch[ 1 ].rm_eo );
  regfree (&preg);
  return 0;
}
----------------------
gcc -O3 -c parse.c -o parse.o
gcc -O3 -o parse parse.o
95 99

real    0m3.068s
user    0m3.063s
sys 0m0.000s