pcp_reference_guide_v2.5 - Tasking

3−40PCP Reference Manual.FRACT/.SFRACTSyntax[label:] .FRACTexpression[,expression]...[label:] .SFRACT expression[,expression]...DescriptionWith the .FRACT or .SFRACT directive the assembler allocates andinitializes one word of memory (32 bits) or a halfword (16 bits) for eachargument. Use commas to separate multiple arguments.An expression can be:• a fractional fixed point expression (range [−1, +1>)• NULL (indicated by two adjacent commas: ,,)ASSEMBLY LANGUAGEMultiple arguments are stored in successive address locations in sets oftwo bytes. If an argument is NULL its corresponding address location isfilled with zeros.If the evaluated argument is out of the range [−1, +1> , the assemblerissues a warning and saturates the fractional value.ExampleFRCT: .FRACT 0.1,0.2,0.3SFRCT: .SFRACT 0.1,0.2,0.3Related information.SPACE (Define storage).ACCUM (Define 64−bit constant fraction in 18+46 bits format )