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overflowing

In computer programming, an integer overflow occurs when an arithmetic operation attempts to create a numeric value that is outside of the range that can be represented with a given number of digits – either higher than the maximum or lower than the minimum representable value.
The most common result of an overflow is that the least significant representable digits of the result are stored; the result is said to wrap around the maximum (i.e. modulo a power of the radix, usually two in modern computers, but sometimes ten or another radix).
An overflow condition may give results leading to unintended behavior. In particular, if the possibility has not been anticipated, overflow can compromise a program's reliability and security.
For some applications, such as timers and clocks, wrapping on overflow can be desirable. The C11 standard states that for unsigned integers modulo wrapping is the defined behavior and the term overflow never applies: "a computation involving unsigned operands can never overflow."On some processors like graphics processing units (GPUs) and digital signal processors (DSPs) which support saturation arithmetic, overflowed results would be "clamped", i.e. set to the minimum or the maximum value in the representable range, rather than wrapped around.

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  1. S

    Header tank overflowing and water is hot in the tank.

    Hi all, Just recently noticed the overflow has started pouring water out, there are three tanks in the loft and I'm quite sure this is from the heating. We have two boilers, one for water and one for the heating, it's an 8 bed Victorian house (bed and breakfast) I went into the loft to see what...
  2. M

    Heating overflowing from vent

    Hi, I'm after some help regarding my Father in laws heating system. He has had a local engineer around but hasn't had a fix and is very remote so I'm looking at the issue before arranging someone to try to fix. He is on oil and has a modern raeburn boiler/range. He has a vented system with...
  3. T

    Overflowing Feeder Tank - Advice Needed

    Hi - I'm hoping someone can help with some advice. Ahead of some renovation work, we had a 50 year old old floor standing boiler in the utility room removed and a new Worcester Bosch Greenstar 24Ri wall mounted in the garage. Aside from being old, the original boiler worked perfectly. A full...
  4. B

    Cistern keeps overflowing

    My cistern kept overflowing randomly was told it was probably caused by the bottom filling valve failing I purchased one and a plumber fitted it and tested it and all seemed well, we where away for a couple of weeks and came back and there was no evidence that it had been overflowing but after...
  5. P

    Fortic tank is overflowing

    Fortic tank is overflowing,plumber replaced ballcock, no change. Came back and says immersion heater thermostat needs replacing? Water appears to be re-entering cold section via pipe from cold tank to hot cylinder, not through vent pipe. Water is warm in cold section. Any advice welcome
  6. C

    Cold water tank overflowing

    Hi all, looking for some advice about an overflowing cold water tank. Each morning the tank has continued filling up, so by the morning we have water coming out the overflow pipe outside. My initial thought was either (a) the ball valve was not set to the right height to turn off the water...
  7. P

    Kitchen sink gurgling and overflowing from air inlet

    Hi there, So I have thrown several methods of drain cleaning from each side of the sink which has improved the issue but it still persists. When draining larger amounts of water from the kitchen sink, or when the washing machine drains out, water starts backing up and coming out at point one...
  8. B

    URGENT Pressure Relief Valve Overflowing & Grundfos MQ Pump pressure

    I have a Grundfos MQ series domestic pump and it has started cycling on and off. The pressure at the outlet reaches approx 2 bar of pressure and the pump shuts off. The pressure then immediately drops as it overflows out of the Pressure Relief valve. Once the pressure gets to 1.5 bar the pump...
  9. K

    Overflowing toilet- how to fix fill valve

    Hi all, If anyone can help with me diagnose the issue with my overflowing toilet I'd be massively grateful. Cistern is constantly leaking. Overflow pipe is constantly filling up and based on my youtube trawl I believe the fill valve in the issue. However, I can't see one similar to mine online...
  10. N

    Toilet Cistern Overflowing (Picture Included)

    Quick question please, the toilet cistern is constantly over flowing and I need to adjust the fill valve. Am I right in assuming that the part circled should turn so that it can be adjusted? Or do I just need to bend the ball cock arm? Thanks Phil.
  11. G

    Cold water tank in the attic overflowing

    Hi All, Looking for some advice. The tank in the attic has been trickling out of the overflow for a few weeks now. I have an open vented system with a hot water pump (Stuart Turner monsoon twin 3) fitted. Have already changed the valve and float in the attic. Set it very low but water is...
  12. J

    Overflowing cold water tank, fixed for good?

    Hi all, We recently return from Xmas holls to find that there’d be a leak in our attic, which has caused some staining on one of the walls. When taking a look myself I couldn’t really see where the leak was coming from, but the water was mainly below the cold water tank and the ply cover on top...
  13. A

    Water Tank Overflowing but not ball cock

    Hi, I have a problem and would be grateful for any help. At the weekend, when filling up the bath, the overflow pipe from the roof started chucking out water. I have one tank in the loft. I have changed the ball cock already but have realised this isn't what's causing the overflow. When...
  14. N

    Central heating header tank seems to be overflowing...

    Can anyone advise... I believe it is the central heating (for radiators) header tank that is overflowing from time to time - ie once or twice a day for a few minutes (it appeared to start again today shortly after the central heating came on - and then the pouring/dripping stopped after a few...
  15. A

    Another intermittent f and e overflowing

    Been to look at an f and e that overflows intermittently. Three port is OK. Property has 2mixer taps - kitchen and basin, I haven't checked these yet as I said I can pop in for a chat as Cust was due to go out, had a quick look in the loft. Have added a picture of the tanks. Will raising the...
  16. F

    Cold water tank in loft overflowing

    hi this has us a bit baffled our heating systems is cold water tank and little f e tank in the loft immersion cylinder in airing cubard and boiler in kitchen The problem was the overflow to the cold tank keep dripping so I replaced the ballcock turned mains on watched it fill up and cut off...
  17. G

    Torbeck valve and overflowing cistern (with video)

    Hi all. I got home this evening and found that my toilet cistern was barely filling up so I turned off the mains, managed to unscrew the torbeck valve and gave it a clean as there seemed to be a lot of grime and grit in and around the pinhole looking valve. Put it all back on and it fills up at...
  18. J

    expansion tank overflowing - a big puzzle why

    Hi all, My customer's f&e tank overflow has had a steady trickle. When the hot water is turned on, it gushes. I initially changed the ball valve (shutting off perfectly) and stiffened the side of the tank (it was flexing out, but otherwise been in for years with no issues), then realised the...
  19. A

    Please Help! Overflowing Gravity Fed System

    Hi All, I am not a plumber, but a fairly competant DIYer. I am having a problem with an old gravity fed hot watre system and am tearing my hair out trying to figure out what could be causing the problem. So, what appears to be happening is the Larger tank in the loft fills until it lifts the...
  20. G

    Tundish overflowing

    Hello, Hoping for some help! We noticed a couple of weeks ago that there was a leak in the cupboard beneath the boiler. Upon further investigation and a little Googling I can confirm that the 'tundish' is completely full of water which doesn't seem to be draining away, or if it is then only...
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