text: function _memset(ptr, value, num) {
   ptr = ptr | 0;
   value = value | 0;
   num = num | 0;
   var stop = 0, value4 = 0, unaligned = 0;
   stop = ptr + num | 0;
   if ((num | 0) >= 20) {
    value = value & 255;
    unaligned = ptr & 3;
    value4 = value | value << 8 | value << 16 | value << 24;
    if (unaligned) {
     unaligned = ptr + 4 - unaligned | 0;
     while ((ptr | 0) < (unaligned | 0)) {
      HEAP8[ptr] = value;
      ptr = ptr + 1 | 0;
     }
    }
    while ((ptr | 0) < (stop & ~3 | 0)) {
     HEAP32[ptr >> 2] = value4;
     ptr = ptr + 4 | 0;
    }
   }
   while ((ptr | 0) < (stop | 0)) {
    HEAP8[ptr] = value;
    ptr = ptr + 1 | 0;
   }
  }
  
  