83Plus:BCALLs:4060

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Synopsis

Official Name: Trunc

BCALL Address: 4060

Truncates the fractional part of a floating point number in OP1.

Inputs

  • OP1 = floating point number

Outputs

  • OP1 = integer part of floating point number

Registers Destroyed

  • AF, BC, DE, HL

Comments

This is similar to the BASIC function int().

Example

Suppose OP11=00h,80h,28h,00h,...
After B_CALL Trunc, OP1=00h,80h,20h,00h,...

Suppose OP1=00h,7Fh,20h,00h,...
After B_CALL Trunc, OP1=00h,80h,00h,00h,...