Gcc Hardware Floating Point Support

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gcc - GNU ARM toolchain with hardware floating point ...

    https://stackoverflow.com/questions/10585208/gnu-arm-toolchain-with-hardware-floating-point-support
    I just wrote an article about using ARM's free GCC toolchain (GNU Tools for ARM Embedded Processors) and STLINK on Linux/Ubuntu to write/program/debug code for an STM32F4 Discovery Board (the F4 is a Cortex M4) - that may help you, the compiler does have hardware floating point support and I'm using it in my examples...

How to tell the compiler to use hardware floating point ...

    https://stackoverflow.com/questions/15998609/how-to-tell-the-compiler-to-use-hardware-floating-point-instructions-with-arm
    I am compiling a program for ARM. The makefile has a flag -msoft-float which is telling the compiler to use software floating point emulation. My question is how can I specify in the makefile to use the hardware floating point instructions instead.

Using the GNU Compiler Collection (GCC): Half-Precision

    https://gcc.gnu.org/onlinedocs/gcc/Half-Precision.html
    6.13 Half-Precision Floating Point. On ARM and AArch64 targets, GCC supports half-precision (16-bit) floating point via the __fp16 type defined in the ARM C Language Extensions. On ARM systems, you must enable this type explicitly with the -mfp16-format command-line option in order to use it. ARM targets support two incompatible representations for half-precision floating-point values.

ARMCC: How to enable the hardware FPU support for Cortex-M7

    http://www.keil.com/support/docs/3716.htm
    Jan 25, 2017 · QUESTION: I know that Cortex-M7 has the option to support a hardware Floating Point Unit (FPU). For instance, I'm using the device Atmel ATSAMV71 that has the hardware FPU support for double floating-point operations. How can I enable this hardware FPU …

Demystifying ARM Floating Point Compiler Options ...

    https://embeddedartistry.com/blog/2017/10/11/demystifying-arm-floating-point-compiler-options/
    Oct 11, 2017 · Since ARM defines a standard floating-point instruction set, we can still utilize the floating-point ABI even if our chip does not support the actual hardware. If floating-point hardware is not present, the instructions will be trapped and executed by a floating-point emulation module instead.

6.12 Half-Precision Floating Point - GNU Compiler Collection

    https://gcc.gnu.org/onlinedocs/gcc-4.8.3/gcc/Half-Precision.html
    Language-level support for the __fp16 data type is independent of whether GCC generates code using hardware floating-point instructions. In cases where hardware support is not specified, GCC implements conversions between __fp16 and float values as library calls.

Nios II Floating Point Hardware 2 Component User Guide

    https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/archives/ug-fph2-15.0.pdf
    Nios II Floating Point Hardware 2 Component User Guide 2015.05.22 ug-1175 Subscribe Send Feedback Introduction The Floating Point Hardware (FPH1)(1) provides substantial performance improvement over floating- point software emulation by providing custom instruction implementations of …

Instruction Sets Floating Point – Arm Developer

    https://developer.arm.com/architectures/instruction-sets/floating-point
    The Arm architecture provides high-performance and high-efficiency hardware support for floating-point operations in half-, single-, and double-precision arithmetic. It is fully IEEE-754 compliant with full software library support. This page describes floating-support relative to Cortex-A and Cortex-R processors. For information relative to Cortex-M, please refer to our DSP for Cortex-M page.

How to Enable Hardware Floating Point Math for Cortex M4 ...

    https://www.silabs.com/community/mcu/32-bit/knowledge-base.entry.html/2014/04/16/how_to_enable_hardwa-vM9u
    (Optional) Add CMSIS\Lib\GCC\libarm_cortexM4lf_math.a to your project for hardware accelerated floating point math functions. How to Verify that Hardware Floating Point is Enabled Launch a debug session in Simplicity Studio and insert a breakpoint on a line containing a floating point operation. Run to the breakpoint and open the Disassembly view.



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