Stores the absolute value of the contents of a floating-point register in another floating-point register.
The fabs instruction sets bit 0 of floating-point register (FPR) FRB to 0 and places the result into FPR FRT.
The fabs instruction has two syntax forms. Each syntax form has a different effect on Condition Register Field 1.
|Syntax Form||Floating-Point Status and Control Register||Record Bit (Rc)||Condition Register Field 1|
The two syntax forms of the fabs instruction never affect the Floating-Point Status and Control Register. If the syntax form sets the Record (Rc) bit to 1, the instruction affects the Floating-Point Exception Summary (FX), Floating-Point Enabled Exception Summary (FEX), Floating-Point Invalid Operation Exception Summary (VX), and Floating-Point Overflow Exception (OX) bits in Condition Register Field 1.
|FRT||Specifies target floating-point register for operation.|
|FRB||Specifies source floating-point register for operation.|
# Assume FPR 4 holds 0xC053 4000 0000 0000. fabs 6,4 # GPR 6 now holds 0x4053 4000 0000 0000.
# Assume FPR 25 holds 0xFFFF FFFF FFFF FFFF. fabs. 6,25 # GPR 6 now holds 0x7FFF FFFF FFFF FFFF.
Floating-Point Move Instructions.
Interpreting the Contents of a Floating-Point Register.