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  • python+gdal+numpy实现影像uint16转uint8
    千次阅读
    2020-08-28 16:18:19

    利用GDAL和numpy实现影像uint16到uint8的转换,
    支持整图转换和切图转换,高效率转换并保存为tif格式、png格式

    优点:简单高效,代码逻辑相对简单
    缺点:使用numpy数组计算,超级耗内存

    实现逻辑:

    1. 使用percentile计算每个波段的直方图的2%、98%的值
    2. 小于2%的值赋值为2%的值,大于98%的值赋值为98%的值
    3. 将数组拉伸到0-255
    
    from PIL import Image
    from osgeo import gdal
    import numpy as np
    
    
    def get_stretch_scale(array):
        """计算2%、98%的值"""
        per2 = np
    更多相关内容
  • $ npm install validate.io-uint16array 要在浏览器中使用,请使用 。 用法 var isUint16Array = require ( 'validate.io-uint16array' ) ; isUint16Array( 值 ) 验证值是否为 。 var arr = new Uint16Array ( ...
  • uint8_t / uint16_t / uint32_t /uint64_t 都是别名,c语言中有哪些数据类型?怎么样取别名 在C语言中有6种基本数据类型:short、int、long、float、double、char 1、数值类型 1)整型:short、int、long 2)浮点型...

    uint8_t / uint16_t / uint32_t /uint64_t 都是别名,c语言中有哪些数据类型?怎么样取别名

    在C语言中有6种基本数据类型:short、int、long、float、double、char

    1、数值类型
    1)整型:short、int、long
    2)浮点型:float、double
    2、字符类型:char

    二、使用 typedef
    在这里插入图片描述
    猛然一看有点看不懂,可能因为美观原因,源码把它分开写了,实际红色框的是一个整体,是对这个整体取别名,同一个数据类型可以有多个别名,就像在导师叫我小王,同学叫我棒哥一样,,,
    在这里插入图片描述
    如下注释:

       /* 7.18.1.1 */
    
        /* exact-width signed integer types */
    typedef   signed           char int8_t;//给有符号char,取别名为int8_t
    typedef   signed short     int int16_t;//给有符号短整型short int,取别名int16_t
    typedef   signed           int int32_t;//给有符号整型short int,取别名int32_t
    typedef   signed       __INT64 int64_t;
    
        /* exact-width unsigned integer types */
    typedef unsigned          char uint8_t;//给无符号char,取别名为uint8_t
    typedef unsigned short     int uint16_t;//给无符号短整型short int,取别名为uint16_t
    typedef unsigned           int uint32_t;//给无符号整型short int,取别名为uint32_t
    typedef unsigned       __INT64 uint64_t;
    
        /* 7.18.1.2 */
    //和上面一样,取其他别名
        /* smallest type of at least n bits */
        /* minimum-width signed integer types */
    typedef   signed          char int_least8_t;
    typedef   signed short     int int_least16_t;
    typedef   signed           int int_least32_t;
    typedef   signed       __INT64 int_least64_t;
    
        /* minimum-width unsigned integer types */
    typedef unsigned          char uint_least8_t;
    typedef unsigned short     int uint_least16_t;
    typedef unsigned           int uint_least32_t;
    typedef unsigned       __INT64 uint_least64_t;
    
        /* 7.18.1.3 */
    
        /* fastest minimum-width signed integer types */
    typedef   signed           int int_fast8_t;
    typedef   signed           int int_fast16_t;
    typedef   signed           int int_fast32_t;
    typedef   signed       __INT64 int_fast64_t;
    
        /* fastest minimum-width unsigned integer types */
    typedef unsigned           int uint_fast8_t;
    typedef unsigned           int uint_fast16_t;
    typedef unsigned           int uint_fast32_t;
    typedef unsigned       __INT64 uint_fast64_t;
    

    为什么喜欢叫它 int8_t, uint8_t;int16_t, uint16_t;int32_t, uint32_t?
    1,数据类型中都带有_t, _t 表示这些数据类型是通过typedef定义的,而不是新的数据类型。也就是说,它们其实是我们已知的类型的别名。
    2,8,16,32又是什么意思?
    这些数字都是位数,即,使用多少位来存储数据,一个字节8位,其中因为数字有正负之粉,对应有符号(signed,最高位为0,表示正数)和无符号(unsigned,最高位为1,表示负数),所以表示的范围不一样,但是因为位数一致,故表示的个数是一样的。
    比如使用16位,也就是两个字节来存储
    可以是 typedef signed short int int16_t;//给有符号短整型short int,取别名int16_t
    也可以是 typedef unsigned short int uint16_t;//给无符号短整型short int,取别名为uint16_t
    int16_t 表示数据范围则是0 ~65535。
    uint16_t 表示数据范围为-32768~32767
    表示的个数是一样的:65536=2的16次方

    参考这个博主的一段话:
    整型的每一种都有无符号(unsigned)和有符号(signed)两种类型(float和double总是带符号的),在默认情况下声明的整型变量都是有符号的类型(char有点特别),如果需声明无符号类型的话就需要在类型前加上unsigned。无符号版本和有符号版本的区别就是无符号类型能保存2倍于有符号类型的正整数数据,比如16位系统中一个int能存储的数据的范围为-32768~32767,而unsigned能存储的数据范围则是0 ~65535。由于在计算机中,整数是以补码形式存放的。根据最高位的不同,如果是1,有符号数的话就是负数;如果是无符号数,则都解释为正数。同时在相同位数的情况下,所能表达的整数范围变大。

    挖一下这句话
    在默认情况下声明的整型变量都是有符号的类型(char有点特别),有什么特别呢

    如何确认char到底是signed char还是unsigned char

    ANSI C 提供了3种字符类型,分别是char、signed char、unsigned char 、char相当于signed char或者unsigned char,但是这取决于编译器
    这三种字符类型都是按照1个字节存储的,可以保存256个不同的值。
    signed char取值范围是 -128 到 127
    unsigned char 取值范围是 0 到 255

    有符号和无符号有默认的,可以省略不写,默认情况下声明的整型变量都是有符号的类型

    typedef char    int8_t; 
    

    如果编译器认为是signed char= char,上面那句就相当于

    typedef signed char    int8_t;   
    

    如果编译器认为是usigned char= char,上面那句就相当于

    typedef usigned char    int8_t;   
    

    再看:

    typedef unsigned short   int uint16_t;
    typedef unsigned   int uint32_t;
    

    参考:C语言中的整数(short,int,long)
    short、int、long 是C语言中常见的整数类型,其中 int 称为整型,short 称为短整型,long 称为长整型。

    int
    short int:int可以省略
    long int:int可以省略

    描述 short、int、long 类型的长度时,只对 short 使用肯定的说法,而对 int、long 使用了“一般”或者“可能”等不确定的说法。这种描述的言外之意是,只有 short 的长度是确定的,是两个字节,而 int 和 long 的长度无法确定,在不同的环境下有不同的表现。
    2 ≤ short ≤ int ≤ long

    这就意味着,short 并不一定真的”短“,long 也并不一定真的”长“,它们有可能和 int 占用相同的字节数。
    一般short 2字节,int 4字节,liong 8字节。

    这样取别名为uint8_t / uint16_t / uint32_t /uint64_t 的好处是?
    1,从名字一眼就可以看出,使用多少位来存数据,统一了“标准”
    2,为了程序的可扩展性, 假如我们此刻将来我们需要的数据大小变成了64bit时,我们只需要将typedef long long size_t就可以了, 不然我们可要修改好多好多的地方了,当自己设计一个int类型保存某种数据时,但你又没把握将来是不是要用long int时你可以引用一个自己定义的数据类型

    假如本程序此时需要一个数据大小为32位的用来存储正数的类型 size_t
    在原来已经定义的如下别名的基础上:

    typedef unsigned  int uint32_t;
    typedef unsigned  long int uint64_t;
    

    可以再次取别名:

    typedef  uint32_t  size_t ;
    

    如果以后要改成64位的,就改为:

    typedef  uint64_t  size_t ;
    

    size_t在代码中出现的,含义全部更改,可扩展性好。

    __int64这种类型是什么?
    参考:long int与long long的区别
    在这里插入图片描述
    测试代码:

    typedef unsigned int       uint32_t;
    typedef unsigned long       uLint32_t;
    typedef unsigned  long long  uint64_t;
    //typedef unsigned  long long int  uint64_t;
    typedef unsigned short    int uint16_t;
    
    int main()
    {
    	uint32_t a;
    	a = 12;
    	printf("unsigned int对应sizeof(a) = %d\n", sizeof(a));
    
    	uLint32_t a1;
    	a1= 12;
    	printf("nsigned long对应 sizeof(a1) = %d\n", sizeof(a1));
    
    	uint64_t b;
    	b = 12;
    	printf("unsigned  long long对应  sizeof(b) = %d\n", sizeof(b));
    
    	uint16_t c;
    	c = 12;
    	printf("unsigned short 对应   int sizeof(c) = %d\n", sizeof(c));
    
    	int d;
    	d= 12;
    	printf("int 对应sizeof(d) = %d\n", sizeof(d));
    
    	long  e;
    	e = 12;
    	printf("long 对应 sizeof(e) = %d\n", sizeof(e));
    
    	long long  f;
    	f = 12;
    	printf("long long对应 sizeof(f) = %d\n", sizeof(f));
    }
    
    

    结果:
    在这里插入图片描述
    long int
      long int即long,给人的感觉好像是长整型,但实际上,它和int一样,只有32位
    int - basic integer type. The keyword int may be omitted if any of the modifiers listed below are used. If no length modifiers are present, it’s guaranteed to have a width of at least 16 bits. However, on 32/64 bit systems it is almost exclusively guaranteed to have width of at least 32 bits.
    long - target type will have width of at least 32 bits.

    long long则不同,long long是C++的64位整型的基本类型,“现任”长整型,从C99开始引入这个概念,在后续的标准中完善概念和定义,C++11官方正式标准如下——
    long long - target type will have width of at least 64 bits.(since C++11)

    展开全文
  • uint16 int c# C#Int16和C#UInt16 (C# Int16 and C# UInt16) In C#, Int16 known as a signed integer of 2 bytes which can store both types of values including negative and positive between the ranges of ...

    uint16 int c#

    C#Int16和C#UInt16 (C# Int16 and C# UInt16)

    In C#, Int16 known as a signed integer of 2 bytes which can store both types of values including negative and positive between the ranges of -32768 to +32767.

    在C#中, Int16被称为2字节的有符号整数,它可以存储-32768至+32767范围之间的两种类型的值,包括负数和正数。

    UInt16 known as an unsigned integer of 2 bytes which can store only positive values between the ranges of 0 to 65535.

    UInt16,它是2个字节的无符号整数 ,只能存储0到65535范围之间的正值。

    'Int16'和'UInt16'之间的区别 (Differences between 'Int16' and 'UInt16')

    Int16UInt16
    Int16 stands for signed integer.UInt16 stands for unsigned integer.
    It's capacity to store the value is -32768 to +32767.It's capacity to store the value is 0 to 65535.
    It can store negative and positive integers.It can store only positive integers.
    It occupies 2-bytes space in the memory.It also occupies 2-bytes space in the memory.
    Declaration syntax:
    Int16 variable;
    Declaration syntax:
    UInt16 variable;
    16位 UInt16
    Int16代表有符号整数。 UInt16代表无符号整数。
    它存储值的能力是-32768至+32767。 该值的存储容量为0到65535。
    它可以存储负整数和正整数。 它只能存储正整数。
    它在内存中占用2个字节的空间。 它还在内存中占用2字节的空间。
    声明语法:
    Int16变量;
    声明语法:
    UInt16变量;

    Example:

    例:

    In this example, to explain the differences between Int16 and UInt16 in C#, we are printing their minimum and maximum values, we are also declaring two arrays – arr1 is a signed integer type and arr2 is an unsigned integer type. Initializing the arrays with corresponding negative and positive values based on their capacity.

    在此示例中,为了解释C#中Int16和UInt16之间区别 ,我们将打印它们的最小值和最大值,同时还声明了两个数组– arr1是有符号整数类型,而arr2是无符号整数类型。 根据其容量用相应的负值和正值初始化数组。

    using System;
    using System.Text;
    
    namespace Test
    {
        class Program
        {
            static void Main(string[] args)
            {
                //Int16 value range 
                Console.WriteLine("Int16 value capacity...");
                Console.WriteLine("Min: {0}, Max: {1}\n", Int16.MinValue, Int16.MaxValue);
    
                //UInt16 value range 
                Console.WriteLine("UInt16 value capacity...");
                Console.WriteLine("Min: {0}, Max: {1}\n", UInt16.MinValue, UInt16.MaxValue);
    
                //Int16 array
                Int16[] arr1 = { -32768, 0, 1000, 32000, 32767};
                Console.WriteLine("UInt16 array elements...");
                foreach (Int16 num in arr1)
                {
                    Console.WriteLine(num);
                }
                Console.WriteLine();
    
                //UInt16 array
                UInt16[] arr2 = { 0, 100, 23000, 65000, 65525};
                Console.WriteLine("UInt16 array elements...");
                foreach (UInt16 num in arr2)
                {
                    Console.WriteLine(num);
                }
    
                //hit ENTER to exit
                Console.ReadLine();
            }
        }
    }
    
    

    Output

    输出量

    Int16 value capacity...
    Min: -32768, Max: 32767
    
    UInt16 value capacity...
    Min: 0, Max: 65535
    
    UInt16 array elements...
    -32768
    0
    1000
    32000
    32767
    
    UInt16 array elements...
    0
    100
    23000
    65000
    65525
    
    
    

    翻译自: https://www.includehelp.com/dot-net/Int16-and-UInt16-in-c-sharp.aspx

    uint16 int c#

    展开全文
  • c# uint64uint, UInt16, UInt32 and UInt64 are used to represent unsigned integers with values ranging based on their capacities/occupied size in the memory. These types work with positive values only. ...

    c# uint64

    uint, UInt16, UInt32 and UInt64 are used to represent unsigned integers with values ranging based on their capacities/occupied size in the memory. These types work with positive values only. All these types are the same in nature but different based on the value ranges.

    uint,UInt16,UInt32和UInt64用于表示无符号整数,其值的范围取决于其在内存中的容量/占用的大小。 这些类型仅适用于正值。 所有这些类型本质上都是相同的,但根据值范围而不同。

    uint,UInt16,UInt32和UInt64之间的区别 (Difference between uint, UInt16, UInt32 and UInt64)

    1)UInt16 (1) UInt16)

    • UInt16 represents 16-bits (2-bytes) unsigned integer.

      UInt16表示16位(2字节)无符号整数。

    • UInt16 occupies 16-bits (2-bytes) space in the memory.

      UInt16在内存中占用16位(2字节)的空间。

    • As per the 2-bytes data capacity, an UInt16's value capacity is 0 to +65535.

      根据2字节的数据容量, UInt16的值容量为0到+65535。

    Example:

    例:

    Consider the code – Here, we are printing required size, type, minimum & maximum value, variable declaration, and assignment of an UInt16.

    考虑代码–在这里,我们正在打印所需的大小,类型,最小值和最大值,变量声明以及UInt16的分配。

    using System;
    using System.Text;
    
    namespace Test
    {
        class Program
        {
            static void Main(string[] args)
            {
                //printing UInt16 capacity, type, MIN & MAX value
                Console.WriteLine("UInt16 occupies {0} bytes", sizeof(UInt16));
                Console.WriteLine("UInt16 type is: {0}", typeof(UInt16));
                Console.WriteLine("UInt16 MIN value: {0}", UInt16.MinValue);
                Console.WriteLine("UInt16 MAX value: {0}", UInt16.MaxValue);
                Console.WriteLine();
    
                //UInt16 variables
                UInt16 a = 12345;
                UInt16 b = 65000;
                Console.WriteLine("a = {0}, b = {1}", a, b);
    
                //hit ENTER to exit
                Console.ReadLine();
            }
        }
    }
    
    

    Output

    输出量

    UInt16 occupies 2 bytes
    UInt16 type is: System.UInt16
    UInt16 MIN value: 0
    UInt16 MAX value: 65535
    
    a = 12345, b = 65000
    
    
    

    2)UInt32 / uint (2) UInt32/uint)

    uint is an alias of UInt32, so, uint and UInt32 are the same type.

    uint是UInt32的别名,因此uint和UInt32是同一类型。

    • UInt32 represents 32-bits (4-bytes) unsigned integer.

      UInt32表示32位(4字节)无符号整数。

    • UInt32 occupies 32-bits (4-bytes) space in the memory.

      UInt32在内存中占用32位(4字节)空间。

    • As per the 4-bytes data capacity, an UInt32's value capacity is 0 to +4294967295.

      按照4字节的数据容量, UInt32的值容量为0到+4294967295。

    Example:

    例:

    Consider the code – Here, we are printing required size, type, minimum & maximum value, variable declaration, and assignment of an UInt32 or uint.

    考虑代码–在这里,我们正在打印所需的大小,类型,最小值和最大值,变量声明以及UInt32或uint的分配。

    using System;
    using System.Text;
    
    namespace Test
    {
        class Program
        {
            static void Main(string[] args)
            {
                //printing UInt32 capacity, type, MIN & MAX value
                Console.WriteLine("UInt32 occupies {0} bytes", sizeof(UInt32));
                Console.WriteLine("UInt32 type is: {0}", typeof(UInt32));
                Console.WriteLine("UInt32 MIN value: {0}", UInt32.MinValue);
                Console.WriteLine("UInt32 MAX value: {0}", UInt32.MaxValue);
                Console.WriteLine();
    
                //UInt32 variables
                UInt32 a = 289812345;
                UInt32 b = 90909;
                Console.WriteLine("a = {0}, b = {1}", a, b);
                Console.WriteLine();
    
                //printing uint capacity, type, MIN & MAX value
                Console.WriteLine("uint occupies {0} bytes", sizeof(uint));
                Console.WriteLine("uint type is: {0}", typeof(uint));
                Console.WriteLine("uint MIN value: {0}", uint.MinValue);
                Console.WriteLine("uint MAX value: {0}", uint.MaxValue);
                Console.WriteLine();
    
                //uint variables
                uint x = 289812345;
                uint y = 90909;
                Console.WriteLine("x = {0}, y = {1}", x, y);
    
                //hit ENTER to exit
                Console.ReadLine();
            }
        }
    }
    
    

    Output

    输出量

    UInt32 occupies 4 bytes
    UInt32 type is: System.UInt32
    UInt32 MIN value: 0
    UInt32 MAX value: 4294967295
    
    a = 289812345, b = 90909
    
    uint occupies 4 bytes
    uint type is: System.UInt32
    uint MIN value: 0
    uint MAX value: 4294967295
    
    x = 289812345, y = 90909
    
    
    

    3)UInt64 (3) UInt64)

    • UInt64 represents 64-bits (8-bytes) unsigned integer.

      UInt64表示64位(8字节)无符号整数。

    • UInt64 occupies 64-bits (8-bytes) space in the memory.

      UInt64在内存中占用64位(8字节)的空间。

    • As per the 8-bytes data capacity, an UInt64's value capacity is 0to +18446744073709551615.

      按照8字节的数据容量, UInt64的值容量为0到+18446744073709551615。

    Example:

    例:

    Consider the code – Here, we are printing required size, type, minimum & maximum value, variable declaration, and assignment of an UInt64.

    考虑代码–在这里,我们正在打印所需的大小,类型,最小值和最大值,变量声明以及UInt64的分配。

    using System;
    using System.Text;
    
    namespace Test
    {
        class Program
        {
            static void Main(string[] args)
            {
                //printing UInt64 capacity, type, MIN & MAX value
                Console.WriteLine("UInt64 occupies {0} bytes", sizeof(UInt64));
                Console.WriteLine("UInt64 type is: {0}", typeof(UInt64));
                Console.WriteLine("UInt64 MIN value: {0}", UInt64.MinValue);
                Console.WriteLine("UInt64 MAX value: {0}", UInt64.MaxValue);
                Console.WriteLine();
    
                //UInt64 variables
                UInt64 a = 289818278722345;
                UInt64 b = 98983989;
                Console.WriteLine("a = {0}, b = {1}", a, b);
                Console.WriteLine();
    
                //hit ENTER to exit
                Console.ReadLine();
            }
        }
    }
    
    

    Output

    输出量

    UInt64 occupies 8 bytes
    UInt64 type is: System.UInt64
    UInt64 MIN value: 0
    UInt64 MAX value: 18446744073709551615
    
    a = 289818278722345, b = 98983989
    
    
    

    翻译自: https://www.includehelp.com/dot-net/difference-between-uint-UInt16-UInt32-and-UInt64-in-c-sharp.aspx

    c# uint64

    展开全文
  • C中int,Uint,uint16等有什么区别以及用处(2011-11-17 14:24:28)在C中,既然有了int,为什么还要有uint?特别是uint16,uint32等又有什么用?他们有什么区别?”-------------------------------------------------...
  • 前几天做题目,题目中要求数据类型使用uint32_t,大致一看,还以为就是int,但是在程序中把它当做int处理时出现了问题,为此在网上找了下资料发现这个语句:typedef unsigned __int32 uint32_t其实就是无符号的32位...
  • float uint32 uint16 转为uint8

    千次阅读 2021-05-23 02:40:55
    } } appendUint16ToVec(std::vector & vec, unsigned short val, bool bigEndian ) { if (bigEndian) { // unsigned char* p = (unsigned char*) &val; // p += 1; // vec.push_back(*p--); // vec.push_back(*p); ...
  • func TestUIntSize(t *testing.T) { fmt.Println("不同无符号int类型占用的字节数大小:") var i1 uint = 1 var i2 uint8 = 2 var i3 uint16 = 3 var i4 uint32 = 4 var i5 uint64 = 5 fmt.Printf("uint : %v...
  • 对于uint16_t和uint8_t之间的相互转化,以及uint16_t的高低位互换。 ** 一.说明: 左移:从二进制的角度看现象,就是左移几位就在右边添几个0。 从逻辑上来讲左移n位就是乘以2的n次方了。 右移:从二进制...
  • matlab中uint16(uint8)函数的用法
  • t uc16 typedef const uint8_t uc8 typedef __IO uint32_t vu32 typedef __IO uint16_t vu16 typedef __IO uint8_t vu8 typedef __I uint32_t vuc32 typedef __I uint16_t vuc16 typedef __I uint8_t vuc8 所以,...
  • 将图像数据类型从uint16转换为uint8

    千次阅读 2021-07-16 18:50:07
    I have a tiff image stack in uint16 datatype and I’d like to convert this to uint8 datatype. I’m not sure how to do this in Fiji.I have loaded the stack in Fiji and I tried to change the datatype ...
  • 在我想着去寻找uint8/uint16/float32数据类型的区别前,我已经花了两天的时间在代码调试上。说来也不长,就几百行的代码,我瞅了两天,硬是没看到错在哪里。。。 毕竟,能写下这个题目的时候,我已经是知道了问题出...
  • t uc16 typedef const uint8_t uc8 typedef __IO uint32_t vu32 typedef __IO uint16_t vu16 typedef __IO uint8_t vu8 typedef __I uint32_t vuc32 typedef __I uint16_t vuc16 typedef __I uint8_t vuc8
  • 1.uint8,uint16与double为了节省存储空间,matlab为图像提供了特殊的数据类型uint8(8位无符号整数),以此方式存储的图像称作8位图像。matlab读入图像的数据是uint8,而matlab中数值一般采用double型(64位)运算。概括...
  • uint8_t,uint16_t,uint64_t相互转换

    千次阅读 2020-09-03 16:20:48
    1. 声明 uint8_t, uint16_t 互转测试数据 uint8_t src_data[10] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}; uint16_t dec_data[5]; uint8_t nsrc_data[10]; 1.1uint8_t 转 uint16_t //uint8_t 转 uint16_t for (int i...
  • char、unsigned char、uint8_t、uint16_t

    千次阅读 2020-03-10 11:05:07
    文章目录char、unsigned char、uint8_t、uint16_t概述转NSStringuint8_t、uint16_t取值范围初探charint取值范围的计算方法sizeof()一些系统的宏推荐阅读 char、unsigned char、uint8_t、uint16_t 概述 基础 在C/...
  • 定义数据类型uint8 uint16 uint32

    千次阅读 2020-05-12 16:15:04
    typedef unsigned char uint8;...typedef unsigned short uint16; /* 无符号16位数据 */ typedef signed short int16; /* 有符号16位数据 */ typedef unsigned int uint32; /* 无符号32位数据 */ typedef s
  • <p>I have an array of uint16 coming from WinAPI <code>PROCESSENTRY32.szExeFile</code> that I wanna convert to a string. <p>Here's my var type <pre><code>var hello [260]uint16 </code></pre> <p>now ...
  • 我们在该文中已经分析了关于字符指针强制类型转换为uint16_t/uint8_t型指针,不会越限的现象,这里我们做一下具体分析: char ch[4]={0xAA,0x11}; printf("%d %d\n",*ch,*(ch+1)); printf("%x %x\n",*ch,*(ch+1...
  • 整型范围 Int8 - [-128 : 127] Int16 - [-32768 : 32767] Int32 - [-2147483648 : 2147483647] Int64 - [-...UInt16 - [0 : 65535] UInt32 - [0 : 4294967295] UInt64 - [0 : 18446744073709551615]
  • 它们都是用 typedef 定义的数据类型,它...uint16_t为2字节 uint32_t为4字节 uint64_t为8字节 具体定义为: typedef signed char int8_t; typedef short int16_t; typedef int int32_t; typedef long long int64_t.
  • C/C++中 float与uint16类型转换方法

    千次阅读 2020-07-17 16:29:20
    C/C++中 float与uint16类型转换方法为什么要做float与uint16互相转换方法一:方法二: 为什么要做float与uint16互相转换 此需求在串口通信时常常会被用到,串口只能以字符型(char)进行通信,如果要首发浮点型...
  • 通过modbus协议读取寄存器里的数据用 uint16_t 类型的数组保存,然后通过mqtt发送,但是好像不支持uint16_t 类型,所以请问怎么转化为字符串类型呢
  • 作为uint16_t类型的小端的值1存储如下,其中a0是低于a1的地址...a0 a1|10000000|00000000注意,最低有效字节是第一个,但是当我们以十六进制打印它时,右边出现最低有效字节,这是我们通常在任何机器上所期望的。...
  • uint8_t / uint16_t / uint32_t /uint64_t 是什么数据类型在nesc的代码中,你会看到非常多你不认识的数据类型,比方uint8_t等。咋一看。好像是个新的数据类型,只是C语言(nesc是C的扩展)里面好像没有这种数据类型啊...
  • 读取一幅二进制(uint16)raw原始图像并对其进行显示,以便后续的图像处理工作 matlab代码: fid = fopen("F:\jihe0001.raw",'r'); %默认是小端存储 data = fread(fid,[2048 12294],'uint16');%大小是2048*12294,取...

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