text: /* minEachRow - Output numeric value for each row. */
  #include "common.h"
  #include "linefile.h"
  #include "hash.h"
  #include "options.h"
  
  
  void usage()
  /* Explain usage and exit. */
  {
  errAbort(
    "minEachRow - Output numeric value for each row\n"
    "usage:\n"
    "   minEachRow input output\n"
    "options:\n"
    "   -xxx=XXX\n"
    );
  }
  
  static struct optionSpec options[] = {
     {NULL, 0},
  };
  
  void minEachRow(char *inName, char *outName)
  /* minEachRow - Output numeric value for each row. */
  {
  struct lineFile *lf = lineFileOpen(inName, TRUE);
  FILE *f = mustOpen(outName, "w");
  char *line;
  if (lineFileNextReal(lf, &line))
      {
      int rowSize = chopByWhite(line, NULL, 0);
      char **row;
      AllocArray(row, rowSize+1);
      for (;;)
          {
  	int thisSize = chopByWhite(line, row, rowSize+1);
  	int i;
  	double minVal;
  	if (thisSize != rowSize)
  	    errAbort("First line has %d words, but line %d has %d words",
  	    	rowSize, lf->lineIx, thisSize);
  	minVal = atof(row[0]);
  	for (i=1; i<rowSize; ++i)
  	    {
  	    double val = atof(row[i]);
  	    if (val < minVal)
  	        minVal = val;
  	    }
  	fprintf(f, "%f\n", minVal);
  	if (!lineFileNextReal(lf, &line))
  	    break;
  	}
      freez(&row);
      }
  carefulClose(&f);
  lineFileClose(&lf);
  }
  
  int main(int argc, char *argv[])
  /* Process command line. */
  {
  optionInit(&argc, argv, options);
  if (argc != 3)
      usage();
  minEachRow(argv[1], argv[2]);
  return 0;
  }
  