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Number of bits: long long


Describe the length in bits of the C long long data type for the selected hardware.

Category: Hardware Implementation


Default: 64

Minimum: 64

Maximum: 128

The number of bits that represent the C long long data type.


  • Use the C long long data type only if your C compiler supports long long.

  • You can change the value of this parameter for custom targets only. For custom targets, all values must be a multiple of 8 and be between 64 and 128.


  • Enable long long enables use of this parameter.

  • The value of this parameter must be greater than or equal to the value of Number of bits: long.

  • Selecting a device by using the Device vendor and Device type parameters sets a device-specific value for this parameter.

  • This parameter is enabled only if you can modify it for the selected hardware.

Command-Line Information

Parameter: ProdBitPerLongLong
Type: integer
Value: any valid value
Default: 64

Recommended Settings

DebuggingNo impact
TraceabilityNo impact
EfficiencyTarget specific
Safety precaution

No recommendation for simulation without code generation.
For simulation with code generation, select your Device vendor and Device type if they are available in the drop-down list.  If your Device vendor and Device type are not available, set device-specific values by using Custom Processor.

See Also