Renesas R8C/Tiny Series, Software Manual, Page: 56 / 297

39
3.2 Functions
Chapter 3 Functions
Absolute value
ABSolute
[ Syntax ]
ABS.size dest
ABS.B R0L
ABS.W A0
[ Selectable dest
]
ABS
[ Function ]
• This instruction takes on an absolute value of
dest
and stores it in
dest
.
[ Description Example ]
ABS
Conditions
O : The flag is set (= 1) when dest before the operation is –128 (.B) or –32768 (.W); otherwise cleared (= 0).
S : The flag is set when the operation resulted in MSB = 1; otherwise cleared.
Z : The flag is set when the operation resulted in 0; otherwise cleared.
C : The flag is indeterminate.
[ Flag Change ]
[ Operation ]
dest dest
B , W
U I O B S Z D C
dest
R0L/R0 R0H/R1 R1L/R2 R1H/R3
A0/ A0 A1/ A1 [A0] [A1]
dsp:8[A0] dsp:8[A1] dsp:8[SB] dsp:8[FB]
dsp:16[A0] dsp:16[A1] dsp:16[SB] abs16
dsp:20[A0] dsp:20[A1] abs20
R2R0 R3R1 A1A0
[ Instruction Code/Number of Cycles ]
Page=138
Flag
Change