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Conversion Functions

LabVIEW 8.6 FPGA Module Help
June 2008

NI Part Number:
371599D-01

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Owning Palette: Numeric Functions

Installed With: FPGA Module. This topic might not match its corresponding palette in LabVIEW depending on your operating system, licensed product(s), and target.

Use the Conversion functions to convert data types. The FPGA Module does not support floating-point conversions.

Note  This palette is specific to FPGA targets and contains a subset of the VIs and functions that are on this palette when you edit a Windows or RT target VI.

When these functions convert an integer to a smaller integer, they copy the least-significant bits without checking for overflow. When they convert an integer to a larger integer, they extend the sign of a signed integer and pad an unsigned integer with zeros.

Use caution when converting numbers to smaller representations, particularly when converting integers, because the LabVIEW conversion routines do not check for overflow.

Refer to the Conversion Palette Details topic for information about Timed Loop compatibility, usage, timing, and resource considerations related to the objects on this palette.

Palette ObjectDescription
Boolean Array To NumberConverts a Boolean array to an integer or a fixed-point number by interpreting the array as the binary representation of the number. If the number is signed, LabVIEW interprets the array as the two's complement of the binary representation of the number. The first element of the array corresponds to the least significant bit in the number.
Boolean To (0,1)Converts a Boolean FALSE or TRUE value to a 16-bit integer with a value of 0 or 1, respectively.
Number To Boolean ArrayConverts an integer or fixed-point number to a Boolean array. If you wire an integer to number, Boolean array returns an array of 8, 16, 32, or 64 elements, depending on the number of bits in the integer. If you wire a fixed-point number to number, the size of the array that Boolean array returns equals the word length of the fixed-point number. The 0th element of the array corresponds to the least significant bit of the two's complement of the binary representation of the integer.
To Byte IntegerConverts a number to an 8-bit integer in the range -128 to 127.
To Fixed-PointConverts any non-complex number to fixed-point representation.
To Long IntegerConverts a number to a 32-bit integer in the range –(2^ 31) to (2^ 31)–1. This function rounds all floating-point and fixed-point numeric values to the nearest integer.
To Unsigned Byte IntegerConverts a number to an 8-bit unsigned integer in the range 0 to 255.
To Unsigned Long IntegerConverts a number to a 32-bit unsigned integer in the range 0 to (2^32)–1.
To Unsigned Word IntegerConverts a number to a 16-bit unsigned integer in the range 0 to 65,535.
To Word IntegerConverts a number to a 16-bit integer in the range –32,768 to 32,767.

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