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FLDPI

Pushes the mathematical constant $\pi$ onto the floating-point register stack.

The table after the description covers what the source and destinations can be.

DO NOT support LOCK

This instruction is available in 64-bit mode, though it operates on the x87 FPU register stack. It is not available in the AVX-512 or SSE register sets.

The constant $\pi$ is loaded with 64-bit precision. If the current precision of the FPU is set to a value other than 64 bits, the value is rounded to the current precision, which MAY trigger #P.