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FLDZ
Loads the scalar floating-point value 0.0 into the specified floating-point register.
The following table covers what the source and destinations can be:
| source | destination(s) |
|---|---|
| imm | #I |
| reg | #I |
| memory | #I |
| implicit | st(n) |
DO NOT support LOCK.
This instruction is available in 64-bit mode and compatibility mode. It operates exclusively on the x87 floating-point stack.
The destination register must be specified as st(n), where n is the index of the register in the floating-point stack. The instruction does not affect the floating-point status word or control word, and no floating-point exceptions are generated. Using an invalid register index for st(n) SHALL result in an invalid operand exception at assembly time.