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MATLAB 中的定点矩阵运算

进行了优化的定点数学运算、矩阵求解器和矩阵分解函数,用于实现高效代码

使用这些函数来执行定点数学和矩阵运算,并生成高效代码。这些函数求解线性方程组,并以对嵌入式设备高效的方式执行矩阵分解。

函数

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ceilDivRound the result of division toward positive infinity (自 R2021a 起)
fixed.cordicDivideFixed-point divide using CORDIC (自 R2020b 起)
fixed.cordicReciprocalFixed-point reciprocal using CORDIC (自 R2021b 起)
fixDivRound the result of division toward zero (自 R2021a 起)
floorDiv将除法结果向负无穷方向舍入 (自 R2021a 起)
nearestDivRound the result of division toward the nearest integer (自 R2021a 起)
modByConstantModulus after division by a constant denominator (自 R2021a 起)
fixed.backwardSubstitute通过后代求解上三角方程组 (自 R2020b 起)
fixed.forwardSubstitute通过前代求解下三角方程组 (自 R2020b 起)
fixed.jacobiSVDFixed-point Jacobi singular value decomposition (自 R2023a 起)
fixed.qlessQRQ-less QR decomposition (自 R2020b 起)
fixed.qlessQRUpdateUpdate QR factorization (自 R2020b 起)
fixed.qrABCompute C = Q'B and upper-triangular factor R (自 R2020b 起)
fixed.qrMatrixSolveSolve system of linear equations Ax = B for x using QR decomposition (自 R2020b 起)
fixed.qlessQRMatrixSolveSolve system of linear equations (A'A)X = B for X using Q-less QR decomposition (自 R2020b 起)
fixed.svdFixed-point Golub-Kahan-Reinsch singular value decomposition (自 R2022b 起)
svdFixed-point Golub-Kahan-Reinsch singular value decomposition (自 R2022b 起)
fixed.qrFixedpointTypesDetermine fixed-point types for transforming A and R and B to C=Q'B in-place, where QR=A is QR decomposition of A (自 R2021b 起)
fixed.qlessqrFixedpointTypesDetermine fixed-point types for transforming A to R in-place, where R is upper-triangular factor of QR decomposition of A, without computing Q (自 R2021b 起)
fixed.realQRMatrixSolveFixedpointTypesDetermine fixed-point types for matrix solution of real-valued AX=B using QR decomposition (自 R2021b 起)
fixed.complexQRMatrixSolveFixedpointTypesDetermine fixed-point types for matrix solution of complex-valued AX=B using QR decomposition (自 R2021b 起)
fixed.realQlessQRMatrixSolveFixedpointTypesDetermine fixed-point types for matrix solution of real-valued A'AX=B using QR decomposition (自 R2021b 起)
fixed.complexQlessQRMatrixSolveFixedpointTypesDetermine fixed-point types for matrix solution of complex-valued A'AX=B using QR decomposition (自 R2021b 起)
fixed.realSingularValueLowerBoundEstimate lower bound for smallest singular value of real-valued matrix (自 R2021b 起)
fixed.complexSingularValueLowerBoundEstimate lower bound for smallest singular value of complex-valued matrix (自 R2021b 起)
fixed.singularValueUpperBoundUpper bound of largest singular value of matrix (自 R2022b 起)
fixed.realConditionNumberUpperBoundEstimate of upper bound for 2-norm condition number of real-valued matrix (自 R2022b 起)
fixed.complexConditionNumberUpperBoundEstimate of upper bound for 2-norm condition number of complex-valued matrix (自 R2022b 起)
fixed.forgettingFactorCompute forgetting factor required for streaming input data (自 R2021b 起)
fixed.forgettingFactorInverseCompute the inverse of the forgetting factor required for streaming input data (自 R2021b 起)
fixed.realQuantizationNoiseStandardDeviationEstimate standard deviation of quantization noise of real-valued signal (自 R2021b 起)
fixed.complexQuantizationNoiseStandardDeviationEstimate standard deviation of quantization noise of complex-valued signal (自 R2021b 起)

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