fabs

Absolute Value

FABS

Replaces ST(0) with its absolute value.

Details

The Absolute Value instruction replaces ST(0) with its absolute value.

Pseudocode Operation

// Replaces ST(0) with its absolute value

Example

FABS

Encoding

Binary Layout
D9
+0
E1
+1
 
Format Legacy
Opcode D9 E1
Extension x87 FPU

Operands