This content has not been validated; it was AI-generated following the x86-64 ISA Documentation generation process to maintain high quality. However, as no human has verified this data, errors may exist. If the accuracy of this data is critical, please consult the Intel SDM. The model used to generate this is gemma4:31b
SETSSBSY
Sets the destination byte to 1 if the scalar single-precision floating-point value in the source operand is a signaling NaN, and 0 otherwise.
The table after the description covers what the source and destinations can be.
| source | destination(s) |
|---|---|
| f32 | reg |
| f32 | m1 |
| imm | #I |
| reg | #I |
| mN | #I |
DO NOT support LOCK
This instruction is available only in 64-bit mode and 32-bit mode; it is not supported in compatibility mode.
The destination operand MUST be a byte-sized register or memory location. Writing to a register larger than 8 bits will result in undefined behavior for the upper bits if not cleared manually. This instruction does not modify the floating-point status register or trigger floating-point exceptions.