CONFIG_FPE_NWFPE is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

NWFPE math emulation

modulename: nwfpe.ko

configname: CONFIG_FPE_NWFPE

Linux Kernel Configuration
└─>Floating point emulation
└─>NWFPE math emulation
In linux kernel since version 2.6.12  
Say Y to include the NWFPE floating point emulator in the kernel.
This is necessary to run most binaries. Linux does not currently
support floating point hardware so you need to say Y here even if
your machine has an FPA or floating point co-processor podule.

You may say N here if you are going to load the Acorn FPEmulator
early in the bootup.

source code: