**Name**- Shl -- shift bits to the left (V1.5)
**Synopsis**-
result = Shl(a, x)

**Function**-
This function shifts
`a`

by`x`

bits to the left, padding the holes with zero bits. This is called a logical shift.`a`

is converted to an unsigned 32-bit integer variable before the shift. **Inputs**-
*a*- source value
*x*- number of bits to shift

**Results**-
*result*- integer result

**Example**-
a = Shl(256, 3)

This returns 2048.

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