f2xm1

Compute 2^x - 1

F2XM1

Computes (2^ST(0)) - 1.

Details

The Compute 2^x - 1 instruction computes (2^ST(0)) - 1.

Pseudocode Operation

// Computes (2^ST(0)) - 1

Example

F2XM1

Encoding

Binary Layout
D9
+0
F0
+1
 
Format Legacy
Opcode D9 F0
Extension x87 FPU

Operands