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Original question:

AM2434: Does AM243X R5 core support double point precision floating instruction?

AM263P4: 64-bit float support

Yuto Kitamura
Expert 5570 points
Part Number: AM263P4

Tool/software:

Dear team,

Does i support double precision float calculation by;

- FPU?

- Software?

If it is only supported by software, is there anyway to optimize its calculation?

the double float is required by customer but they needs 8MB memory. Therefore i thought AM263P4 or -SIP are the best option now.

Yuto

  • +1
    TI__Guru*** 134845 points

    Hello Kitamura-san,

    The FPU on the device is a VFPv3-D16 which means it has 16 double-precision registers

    Arm definition of standard VFPv3: 

    • VFPv3, implemented on ARM architecture v7 and later. VFPv3 is backwards compatible with VFPv2, except that it cannot trap floating point exceptions. It requires no software support code. VFPv3 has 32 double-precision registers.

    Arm definition for the -D16 architecture which reduces the quantity of double-precision registers from 32 to 16.

    • VFPv3-D16, an implementation of VFPv3 that provides 16 double-precision registers. It is implemented on ARM architecture v7 processors that support VFP without NEON.

    Best Regards,

    Ralph Jacobi