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The Linux kernel configuration item CONFIG_M68KFPU_EMU_EXTRAPREC
has multiple definitions:
arch/m68k/Kconfig.cpu
The configuration item CONFIG_M68KFPU_EMU_EXTRAPREC:
CONFIG_M68KFPU_EMU
The fpu uses normally a few bit more during calculations for correct rounding, the emulator can (often) do the same but this extra calculation can cost quite some time, so you can disable it here. The emulator will then "only" calculate with a 64 bit mantissa and round slightly incorrect, what is more than enough for normal usage.
arch/m68k/Kconfig.mmu
The configuration item CONFIG_M68KFPU_EMU_EXTRAPREC:
CONFIG_M68KFPU_EMU
The fpu uses normally a few bit more during calculations for correct rounding, the emulator can (often) do the same but this extra calculation can cost quite some time, so you can disable it here. The emulator will then "only" calculate with a 64 bit mantissa and round slightly incorrect, what is more than enough for normal usage.
arch/m68k/Kconfig
The configuration item CONFIG_M68KFPU_EMU_EXTRAPREC:
CONFIG_M68KFPU_EMU
The fpu uses normally a few bit more during calculations for correct rounding, the emulator can (often) do the same but this extra calculation can cost quite some time, so you can disable it here. The emulator will then "only" calculate with a 64 bit mantissa and round slightly incorrect, what is more than enough for normal usage.
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