Rev. 1.50, 10/04, page 365 of 448
10.3.1 FABS (Floating-point Absolute Value): Floating-Point Instruction
PR Format Operation Instruction Code Cycle T Bit
0 FABS FRn FRn & H'7FFFFFFF → FRn 1111nnnn01011101 1 —
1 FABS DRn DRn & H'7FFFFFFFFFFFFFFF
→ DRn
1111nnn001011101 1 —
Description: This instruction clears the most significant bit of the contents of floating-point
register FRn/DRn to 0, and stores the result in FRn/DRn.
The cause and flag fields in FPSCR are not updated.
Notes: None
Operation:
void FABS (int n){
FR[n] = FR[n] & 0x7fffffff;
pc += 2;
}
/* Same operation is performed regardless of precision. */
Possible Exceptions: None
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