定点数学功能

MATLAB^®functions that support fixed-point data types

Create and manipulate fixed-point matrices and arrays. Use arithmetic, linear algebra, trigonometric, statistics, and complex math functions that support fixed-point data types.

Functions

展开全部

Array and Matrix Operations

Array Creation

`冒号，：`	Create vectors, array subscripting
`eye`	Create identity matrix with fixed-point properties
`那些`	创建具有定点属性的所有数组
`zeros`	Create array of all zeros with fixed-point properties

Array and Matrix Manipulation

`Horzcat`	Concatenate multiple`fi`水平对象
`sort`	Sort elements of real-valued`fi`object in ascending or descending order
`subsasgn`	订阅分配
`subsref`	Subscripted reference
`vertcat`	Vertically concatenate multiple`fi`对象

基本阵列和矩阵信息

`isequivalent`	确定是否两个`数字型`对象具有等效属性
`iSfloat`	Determine whether input is floating-point data type
`max`	阵列中的最大元素`fi`对象
`min`	Smallest element in array of`fi`对象
`numel`	Number of data elements in`fi`大批

数组和矩阵操作员

`ctranspose`	复杂的共轭转置`fi`object
`minus`	Matrix difference between`fi`对象
`mpower`	Fixed-point matrix power (^)
`mrdivide`	右矩阵部
`mtimes`	矩阵产品`fi`对象
`plus`	Matrix sum of`fi`对象
`qr`	Orthogonal-triangular decomposition
`rdivide`	Right-array division
`ShiftData`	Shift data to operate on specified dimension
`sum`	总和`fi`数组元素
`times`	Element-by-element multiplication of`fi`对象
`uminus`	Negate elements of`fi`object array
`unshiftdata`	Inverse of`ShiftData`

Linear System Solvers and Matrix Factorizations

`固定。背启动`	Solve upper-triangular system of equations through backward substitution
`fixed.forwardSubstitute`	通过前向替换解决下三角形的方程式
`fixed.qlessQR`	无Q-QR分解
`recix.qlessqrupdate`	Update QR factorization
`recied.qrab`	计算C=Q'*B和上三角因子R
`fixed.qrMatrixSolve`	Solve system of linear equationsAx=Bforx使用QR分解
`recix.qlessqrmatrixsolve`	Solve system of linear equations (A'A)x=Bforxusing Q-less QR decomposition

Specialized Matrices

toeplitz Create Toeplitz matrix

Complex Math

`abs`	Absolute value of`fi`object
`complex`	构建复合物`fi`object from real and imaginary parts
`conj`	复杂的结合`fi`object
`sign`	在数组上执行符号功能（信号函数）

常数

`eps`	Quantized relative accuracy for`fi`or`quantizer`对象
`intmax`	最大的正存储整数值可代表`数字型`of`fi`object
`intmin`	Smallest stored integer value representable by`数字型`of`fi`object

Exponentials

`NextPow2`	Exponent of next higher power of 2 of`fi`object
`pow2`	Efficient fixed-point multiplication by 2^K
`力量`	Fixed-point element-wise power
`sqrt`	Square root of`fi`object

数学操作

`accumneg`	Subtract two`fi`对象or values
`accumpos`	Add two`fi`对象or values
`add`	Add two`fi`对象使用`fimath`object
`atan2`	定点值的四季度逆切线
`ceilDiv`	Round the result of division toward positive infinity
`转换`	Convolution and polynomial multiplication of`fi`对象
`cos`	余弦`fi`object
`divide`	Divide two`fi`对象
`fixDiv`	Round the result of division toward zero
`floorDiv`	将分裂的结果归于负无穷大
`innerprodintbits`	Number of integer bits needed for fixed-point inner product
`mpy`	使用两个对象使用`fimath`object
`最近`	Round the result of division toward the nearest integer
`NNZ`	Number of nonzero elements in`fi`object
`normalizedReciprocal`	计算normalized reciprocal
`sin`	Sine of fixed-point values
`sqrt`	Square root of`fi`object
`sub`	Subtract two`fi`对象使用`fimath`object

Radix Conversion

`bin`	Unsigned binary representation of stored integer of`fi`object
`bin2num`	Convert two's complement binary string to number using`quantizer`object
`12月`	存储的整数的未签名小数表示`fi`object
`12月2base`	将小数整数转换为基础 -nrepresentation for`fi`对象
`12月2bin`	将小数整数转换为其二进制表示`fi`对象
`DEC2HEX`	Convert decimal integer to its hexadecimal representation for`fi`对象
`十六进制`	十六进制翅tation of stored integer of`fi`object
`hex2num`	Convert hexadecimal string to number using`quantizer`object
`num2bin`	使用数字转换为二进制表示`quantizer`object
`NUM2HEX`	使用数字转换为十六进制的同等用途`quantizer`object
`num2int`	Convert number to signed integer using`quantizer`object
`oct`	存储的整数的八分代表示`fi`object
`SDEC`	存储的整数的签名小数表示`fi`object

Relational Operators

`eq`	Determine whether real-world values of two`fi`对象相等
`ge`	确定一个现实世界的价值是否`fi`object is greater than or equal to another
`gt`	确定一个现实世界的价值是否`fi`object is greater than another
`le`	Determine whether real-world value of`fi`对象小于或等于另一个
`lt`	确定一个现实世界的价值是否`fi`object is less than another
`ne`	Determine whether real-world values of two`fi`对象are not equal

Rounding and Remainders

舍入功能

`ceil`	Rounds toward positive infinity
`转换ergent`	朝最近的整数往圆形，带有领带舍入到最近的整数
`fix`	朝零
`floor`	朝着负无穷大
`nearest`	圆形朝最近的整数，领带朝向正无穷大
`圆形的`	Round`fi`对象使用最近的整数或圆形输入数据`quantizer`object

Modulus and Remainder Functions

`mod`	Modulus after division for`fi`对象
`modbyConstant`	通过常数分母分裂后的模量

Statistics

`errmean`	Mean of quantization error
`errpdf`	量化误差的概率密度函数
`errvar`	量化误差的差异
`logreport`	Quantization report
`maxlog`	Log maximums
`minlog`	最小值
`noperations`	操作数量
`noverflows`	Number of overflows
`nunderflows`	下面的数量
`resetlog`	清除日志`fi`or`quantizer`object
`意思是`	定点阵列的平均值或平均值
`中位数`	Median value of fixed-point array