Function _memset

js/sql-debug.js:397843–397890

(ptr, value, num)

    return dest | 0;
}
function _memset(ptr, value, num) {
    ptr = ptr|0; value = value|0; num = num|0;
    var end = 0, aligned_end = 0, block_aligned_end = 0, value4 = 0;
    end = (ptr + num)|0;

    value = value & 0xff;
    if ((num|0) >= 67 /* 64 bytes for an unrolled loop + 3 bytes for unaligned head*/) {
      while ((ptr&3) != 0) {
        HEAP8[((ptr)>>0)]=value;
        ptr = (ptr+1)|0;
      }

      aligned_end = (end & -4)|0;
      block_aligned_end = (aligned_end - 64)|0;
      value4 = value | (value << 8) | (value << 16) | (value << 24);

      while((ptr|0) <= (block_aligned_end|0)) {
        HEAP32[((ptr)>>2)]=value4;
        HEAP32[(((ptr)+(4))>>2)]=value4;
        HEAP32[(((ptr)+(8))>>2)]=value4;
        HEAP32[(((ptr)+(12))>>2)]=value4;
        HEAP32[(((ptr)+(16))>>2)]=value4;
        HEAP32[(((ptr)+(20))>>2)]=value4;
        HEAP32[(((ptr)+(24))>>2)]=value4;
        HEAP32[(((ptr)+(28))>>2)]=value4;
        HEAP32[(((ptr)+(32))>>2)]=value4;
        HEAP32[(((ptr)+(36))>>2)]=value4;
        HEAP32[(((ptr)+(40))>>2)]=value4;
        HEAP32[(((ptr)+(44))>>2)]=value4;
        HEAP32[(((ptr)+(48))>>2)]=value4;
        HEAP32[(((ptr)+(52))>>2)]=value4;
        HEAP32[(((ptr)+(56))>>2)]=value4;
        HEAP32[(((ptr)+(60))>>2)]=value4;
        ptr = (ptr + 64)|0;
      }

      while ((ptr|0) < (aligned_end|0) ) {
        HEAP32[((ptr)>>2)]=value4;
        ptr = (ptr+4)|0;
      }
    }
    // The remaining bytes.
    while ((ptr|0) < (end|0)) {
      HEAP8[((ptr)>>0)]=value;
      ptr = (ptr+1)|0;
    }
    return (end-num)|0;
}
function _sbrk(increment) {
    increment = increment|0;
    var oldDynamicTop = 0;