NLZ

NLZ
Description	Normalize (integer to floating)
Format	NLZ <scaling>
Code	151 4008
Affected	(T), (A), (D)
Type	User
Architecture	ND-100, ND-110

NLZ is an assembly instruction. It converts the number in the A register to a standard form 48-bit floating point number in the floating point accumulator (T, A and D registers), using the scaling of the NLZ instruction as a scaling factor.

The scaling is given to the conversion of -128 to 127 (approximately 10^-39 to 10³⁹).

For integers, a scaling factor of +16₁₀ will give a floating point number with the same value as the integer. A larger scaling factor will result in a higher floating point number. Because of the single precision fixed point number, the D register will be cleared.

Example

• NLZ+20 (code 151420) Convert from integer to floating point.

NLZ on 32-bit floating point CPUs

The ND-100/110 can have a 48-bit floating point CPU (standard configuration) or a 32-bit floting point CPU (customer option). For 32-bit floating point operations NLZ works as described above, except that the T register is not affected.

References

• Norsk Data Document ND–06.014.02 ND-100 REFERENCE MANUAL pages 120, 144, 146 and 240
• Norsk Data Document ND–06.029.01 ND-110 Instruction Set page 70 and 72