Balík: vfpv3-support (21)

CPU feature checking - require VFPv3

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 VFPv3 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.

VFPv3 has 32 64-bit FPU registers as standard, adds VCVT instructions to convert between scalar, float, and double, and adds immediate mode to VMOV, allowing constants to be loaded into FPU registers. It is available on most Cortex-A8 and -A9 ARMv7 processors.

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