, value, number); } catch (OverflowException) { Console.WriteLine("Unable to convert '0x{0}' to a signed byte.", value); } 在执行二进制运算或数值转换时,开发人员始终有责任验证方法是否使用适当的数值表示形式来解释特定值。 如以下示例所示,在将值转换为其十六进制字符串表示形式时,首先确定值是...
static Float toFloat(Object value, Float defaultValue) 转换为Float 如果给定的值为空,或者转换失败,返回默认值 转换失败不会报错 static Float[] toFloatArray(Object value) 转换为Float数组 static String toHex(byte[] bytes) byte数组转16进制串 static String toHex(String str, Charset charset) 字符...
[System.CLSCompliant(false)] public static byte ToByte (ushort value); 参数 value UInt16 要转换的 16 位无符号整数。 返回 Byte 等效于 value的8 位无符号整数。 属性 CLSCompliantAttribute 例外 OverflowException value 大于Byte.MaxValue。 示例 以下示例将无符号 16 位整数数组转换为 Byte 值。
#include <iostream>unionUStuff {floatf;unsignedcharc[0]; };intmain() { UStuff a, b; a.f = 0.1;for(size_t i = 0; i <sizeof(UStuff); ++i) { std::cout <<"byte "<< i <<": "<< (unsignedint)(a.c[i]) << std::endl; b.c[i] = a.c[i]; } std::cout << b....
public void ConvertByteSingle(byte byteVal) { float floatVal; // Byte to float conversion will not overflow. floatVal = System.Convert.ToSingle(byteVal); System.Console.WriteLine("The byte as a float is {0}.", floatVal); // Float to byte conversion can overflow. try { byteVal = System...
public void ConvertByteSingle(byte byteVal) { float floatVal; // Byte to float conversion will not overflow. floatVal = System.Convert.ToSingle(byteVal); System.Console.WriteLine("The byte as a float is {0}.", floatVal); // Float to byte conversion can overflow. try { byteVal = System...
进行大范围向小范围转换首先应明确数值类型编码格式,特别是有符号和无符号值间转换,浮点型值转换。float跟double接受的都是IEEE 754舍入规则,但是表示同一数值的时候并不完全一样,如何进行值范围内的转换可以使用投射。 byte to char 是一种特殊的转换,将byte扩大转换为int,再将int缩小转换为char,因此也存在超出范围...
http://msdn.microsoft.com/en-us/library/system.bitconverter.tosingle.aspxFor example BitConverter.ToSingle method returns a single-precision floating point number converted from four bytes at a specified position in a byte array, as you're dealing with 32-bit (single) precision....
public void ConvertByteSingle(byte byteVal) { float floatVal; // Byte to float conversion will not overflow. floatVal = System.Convert.ToSingle(byteVal); System.Console.WriteLine("The byte as a float is {0}.", floatVal); // Float to byte conversion can overflow. try { byteVal = System...
}publicstaticfloatReadFloat(thisbyte[] buffer,intstartIndex,boolbigEndian =true) {floatval;if(bigEndian) { Array.Reverse(buffer, startIndex,4);//需要先反转顺序,因为本地转换函数是小端的val =BitConverter.ToSingle(buffer, startIndex); Array.Reverse(buffer, startIndex,4);//用完,再反转回来,避免破...