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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...
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.
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.
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 …
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.
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.
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 …
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.
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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