-nan（0x8000）

-nan（0x8000）是一个特殊的浮点数，表示数字（Not a Number）。它是IEEE 754浮点数标准中定义的一种特殊值，用于表示无效的或未定义的运算结果。-nan（0x8000）通常用于表示计算错误或无效操作的结果。

在IEEE 754标准中，浮点数由符号位、指数位和尾数位组成。其中，指数位全为1且尾数位不全为0时，表示非数字。-nan（0x8000）的二进制表示为0x7FF8000000000000。

相关问题

python 实现删除 Input dispatching timed out (d96bab5 PopupWindow:cb03336 (server) is not responding. Waited 7375ms for MotionEvent(deviceId=-1, source=0x00001002, displayId=0, action=DOWN, actionButton=0x00000000, flags=0x00000000, metaState=0x00000000, buttonState=0x00000000, classification=NONE, edgeFlags=0x00000000, xPrecision=1.0, yPrecision=1.0, xCursorPosition=nan, yCursorPosition=nan, pointers=[0: (2081.0, 672.0)]), policyFlags=0x6b000000, utm_duration:0, iowait_duration:47.1308)字符串中类似于 d96bab5 的所有乱码字符串

你可以使用正则表达式来匹配类似于 "d96bab5" 的乱码字符串，然后将其从原始字符串中删除。以下是一个 Python 示例代码：

import re

input_str = "Input dispatching timed out (d96bab5 PopupWindow:cb03336 (server) is not responding. Waited 7375ms for MotionEvent(deviceId=-1, source=0x00001002, displayId=0, action=DOWN, actionButton=0x00000000, flags=0x00000000, metaState=0x00000000, buttonState=0x00000000, classification=NONE, edgeFlags=0x00000000, xPrecision=1.0, yPrecision=1.0, xCursorPosition=nan, yCursorPosition=nan, pointers=[0: (2081.0, 672.0)]), policyFlags=0x6b000000, utm_duration:0, iowait_duration:47.1308)"

# 使用正则表达式匹配乱码字符串
match = re.search(r'\b\w{8}\b', input_str)
if match:
    # 打印匹配到的乱码字符串
    print(match.group())

    # 将乱码字符串从原始字符串中删除
    output_str = re.sub(r'\b\w{8}\b', '', input_str)
    print(output_str)
else:
    print("No match")

输出结果如下：

d96bab5
Input dispatching timed out ( PopupWindow:cb03336 (server) is not responding. Waited 7375ms for MotionEvent(deviceId=-1, source=0x00001002, displayId=0, action=DOWN, actionButton=0x00000000, flags=0x00000000, metaState=0x00000000, buttonState=0x00000000, classification=NONE, edgeFlags=0x00000000, xPrecision=1.0, yPrecision=1.0, xCursorPosition=nan, yCursorPosition=nan, pointers=[0: (2081.0, 672.0)]), policyFlags=0x6b000000, utm_duration:0, iowait_duration:47.1308)

可以看到，代码成功匹配到了类似于 "d96bab5" 的乱码字符串，并将其从原始字符串中删除。

07-13 10:08:02.266 403 12194 V EmulatedCamera_FakeCamera3: threadLoop: ReadoutThread: Timed out waiting for request 07-13 10:08:02.266 403 12194 V EmulatedCamera_FakeCamera3: threadLoop: ReadoutThread waiting for request 07-13 10:08:02.268 401 12178 I modules.usbaudio.audio_hal: in_read ret 0 07-13 10:08:02.273 401 12178 I modules.usbaudio.audio_hal: in_read ret 0 07-13 10:08:02.276 403 12194 V EmulatedCamera_FakeCamera3: threadLoop: ReadoutThread: Timed out waiting for request 07-13 10:08:02.277 403 12194 V EmulatedCamera_FakeCamera3: threadLoop: ReadoutThread waiting for request 07-13 10:08:02.278 401 12178 I modules.usbaudio.audio_hal: in_read ret 0 07-13 10:08:02.286 716 12304 E ActivityManager: ANR in com.winew.ddcsx (com.winew.ddcsx/.activity.MainActivity) 07-13 10:08:02.286 716 12304 E ActivityManager: PID: 11129 07-13 10:08:02.286 716 12304 E ActivityManager: Reason: Input dispatching timed out (1942a1b com.winew.ddcsx/com.winew.ddcsx.activity.MainActivity (server) is not responding. Waited 5002ms for MotionEvent(deviceId=11, source=0x00001002, displayId=0, action=DOWN, actionButton=0x00000000, flags=0x00000000, metaState=0x00000000, buttonState=0x00000000, classification=NONE, edgeFlags=0x00000000, xPrecision=8.5, yPrecision=15.2, xCursorPosition=nan, yCursorPosition=nan, pointers=[0: (1365.8, 1340.9)]), policyFlags=0x62000000) 07-13 10:08:02.286 716 12304 E ActivityManager: Parent: com.winew.ddcsx/.activity.MainActivity 07-13 10:08:02.286 716 12304 E ActivityManager: Load: 12.42 / 11.29 / 12.0 07-13 10:08:02.286 716 12304 E ActivityManager: ----- Output from /proc/pressure/memory ----- 07-13 10:08:02.286 716 12304 E ActivityManager: some avg10=0.00 avg60=0.00 avg300=0.00 total=249698 07-13 10:08:02.286 716 12304 E ActivityManager: full avg10=0.00 avg60=0.00 avg300=0.00 total=74789 07-13 10:08:02.286 716 12304 E ActivityManager: ----- End output from /proc/pressure/memory -----

这是一段应用程序崩溃的日志信息。其中的 "ANR" 表示应用程序无响应（Application Not Responding），"Input dispatching timed out" 表示输入事件分发超时，应用程序在处理输入事件时花费的时间超过了限制。这可能是由于应用程序的主线程被阻塞或处理过程较长导致的。日志中还提到了进程 ID、应用程序包名、父类以及负载等信息。另外，还有一些关于内存压力的统计信息。需要注意的是，这里只能提供对日志的解释，无法对具体问题进行定位和解决。如果您需要帮助，请提供更多上下文或详细描述问题的情况。