套件：vfpv2-support（21）

CPU feature checking - require VFPv2

The packages in the isa-support family probe for microprocessor Instruction Set Architecture features such as SSE3. By refusing to install on machines lacking a required feature, they allow ISA requirements to be handled in terms of package dependencies.

This is a mostly dummy package which checks for VFPv2 and refuses to install on unsupported hardware.

VFP (Vector Floating Point) technology is a floating-point unit (FPU) coprocessor extension to the ARM architecture. It provides single- and double-precision floating-point computation fully compliant with IEEE 754-1985.

VFPv2 has 16 64-bit FPU registers. It is available for some ARMv5 and all ARMv6 cores.

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