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arm_math's Introduction

ARM Math Library

This is the CMSIS-DSP library source code, also commonly called the arm_math.h library.

This code may only be used with microprocessors manufactured or simulated under license from ARM. See CMSIS_LICENSE.pdf for details.

The intended purpose of this github repository is development of a new makefile or build script to compile this library using modern version of the arm-none-eabi-gcc toolchain with alternate parameters, such as function sections and link time optimization. These alternate compiler parameters are needed for the development of Tools to be used solely for the purpose of developing software programs for use with microprocessors manufactured or simulated under license from ARM.

arm_math's People

Contributors

paulstoffregen avatar

Stargazers

avatar avatar avatar Xiaow avatar zoulingqi avatar Per Bækgaard avatar Callum Tilbury avatar Frank avatar Orlando Hoilett avatar Aaron Covrig avatar Albin Stigo avatar

Watchers

James Cloos avatar avatar Frank avatar avatar avatar Andrii Baliuk avatar avatar

Forkers

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arm_math's Issues

core_cmFunc.h missing

As referenced from core_cm0plus.h.

I'm trying to learn some DSP on the Teensy LC so it would be super nice if this could be fixed somehow.

Any reason why arm_math.h is hard coded for CORTEX_M4?

Thank you for your work on Teensy. Very much appreciated!

Still up to date?

Hi Paul, is this the currently used version? I'd like to compile it with a newer GCC.

Source matrix modified by arm_mat_inverse

Hello,
I have an algorithm using arm_math_inverse.
In one operation I reuse the input operand passed to arm_mat_inverse.

arm_mat_inverse(&SumCk, &InvSumCk); // SumCk value changes in the inverse operation
arm_mat_mult(&SumCk, &Dk, &result); // Bad result because SumCk doesn't have his original value

arm_status arm_mat_inverse_f32(const arm_matrix_instance_f32 * pSrc, arm_matrix_instance_f32 * pDst)
The pSrc parameter is declared as const. The pSrc value never would change.

The algorithm performs a sequence of elementary row operations till it reduces the input matrix to an identity matrix.
The input matrix changes.

Is there any other arm_mat_ function that changes the input parameters?
Thank you

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