y**********g
发帖数: 125 | 1 有什么绑在腰部帮助初学者float的东西吗？那个board不好，不能把手腾出来学动作。
请推荐，谢谢。 |
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y**********g
发帖数: 125 | 2 我买的是3 floats，adult用的吧，区别估计就是浮块的数量差别。 |
|
hs
发帖数: 1549 | 3 肯定的
这个能不能逐渐减少分量， 3-2-1 floats，然后就成功了？ |
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m********l
发帖数: 190 | 4 哇， 我正想发同样的帖子，看到有很多家floats, 还有专门的日出团，有去过的给点
建议把
? |
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b******k
发帖数: 1773 | 5 我们想去rafting， 应该比floating好玩一些？
去过的人也来讲讲？ |
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p**s
发帖数: 788 | 6 Snake River的floating是给非热爱户外活动人士专设的，特适合有小童的家庭，无惊
无险无刺激，照相倒是不错。比开车看到的景色当然不同，因为有水。
两年前我们当时住的是Jackson Lake Lodge，在旅馆报名就是了。
? |
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b***i
发帖数: 59 | 7 请问刚满一岁的宝宝可以坐这个floating吗？
谢谢 |
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p******K
发帖数: 277 | 8 I just booked rafting for independence day from
http://www.jhww.com/
it is rated top one by tripadvisor among all jackson hole snake river
rafting.
They, as most other providers, offer two kind of floating/rafting, one with
big boat, appropriate for young and senior, (cameras are allowed and
recommended). The other one is "8-person rafting", and may be much more
bumpy, and only water-proofs are permitted on board. |
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w*****y
发帖数: 303 | 9 从1到2隔太久，发现板斧居然把包子收回去了，ffdt
****************************************************************************
****
从提提卡卡湖上的小岛Taquile出来都下午3点多了，大团的游客早两个小时都走了。小
导游有点急，因为我们下面还要去floating uros island（狗狗了一下，中文译做乌鲁
斯人漂流岛）。其实当时计划来提提卡卡，一多半是看了Uros的介绍，觉得这种漂浮的
小岛很神奇。
乌鲁斯人(Uros)比印加人更早，他们选择住在漂浮的岛上是为了躲避敌人和战争，可是
据说后来他们还是被印加人奴役。现在绝大部分人都搬到Puno城里，只有一小部分还在
打理给我们这些游客看的漂流岛，只有更小一部分真的住在岛上。这个岛，最吸引眼球
的就是它是纯人造的芦苇岛。乌鲁斯人把水里的芦苇(totora reed)砍断晒干横七竖八
的扎成结实的草垛，再用草绳把这些草垛捆起来结成足够大的一块，够一家人活动，再
在上面盖房子，成就一个乌鲁斯人家的漂浮岛。岛的漂浮地基厚一到两米，家家户户再
互相连起来，... 阅读全帖 |
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l****o
发帖数: 176 | 10 我没有去floating，不过在河边走过一段，河水不算很急。 |
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v****m
发帖数: 26 | 11 几年前，我和家人坐过。河水不急。当时我们住在signal mountain下的木屋里。柜台
接待处有floating trip的info。
我个人的感觉是，有时间就玩，没时间，也就罢了。 |
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t*****n
发帖数: 1318 | 12 等苗长大一点，可以直接盖在苗上，不用搭棚子那种，现在再用主要是保湿？然后可以
阻止蛾子往菜上生蛋长虫子？
floating cover是这么使的吗？
多谢！ |
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y****2
发帖数: 11909 | 13 floating cover主要是防虫，像flee beetle，cucumber beetle 等各种飞虫都可以防
，种子撒下去浇好水就可以直接盖上，我以前是在AMAZON上买的，价格差得不是很多。 |
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t*****n
发帖数: 1318 | 14 还有盖完floating cover就不用浇水了？ |
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y****2
发帖数: 11909 | 15 可以一直盖着，什么时候没有虫害了就不用盖了，爬藤的蔬菜到后面没法用floating
cover了，如果开花了就得揭开，不然花儿得不到授粉，所以我的黄瓜开花后都是听天
由命了：） |
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G********d
发帖数: 10250 | 16 floating element的镜头和普通镜头在用extension 拍的时候 有什么区别？ |
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D********o
发帖数: 2074 | 17 bayphoto打印时可以订 float mount block, about $5-7, very good for mounting
and display |
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B*********L
发帖数: 700 | 18 大家帮忙看,我有一个非常直接query，就是select ... from xxx，但是超过1000行，
每行都有数学公式，我每小时run一次，现在时常有下面这个error：
Arithmetic overflow error converting expression to data type float
我不知道是哪一行的毛病，大家遇到这样的情况怎么办？ |
|
x**********0
发帖数: 163 | 19 我想add 一个extended properties to a database,
for all tables but only float data type field
我搞不明白了，请教大家，谢谢啦 |
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w**2
发帖数: 724 | 20 请问@6是什么意思？
我用ssms打开database看了，一切正常。
求救，大谢！
Unhandled Exception: System.Data.Entity.Infrastructure.DbUpdateException: An
error occurred while up
dating the entries. See the inner exception for details. ---> System.Data.
UpdateException: An error
occurred while updating the entries. See the inner exception for details. --
-> System.Data.SqlClient
.SqlException: The incoming tabular data stream (TDS) remote procedure call
(RPC) protocol stream is
incorrect. Parameter 9 ("@6"): The supplied value is... 阅读全帖 |
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c****s
发帖数: 66 | 21 在网络侧我的配置里有HSRP。 整个端到端传输容错是路径冗余，所以才要在server上
做这个floating IP. |
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R*****A
发帖数: 127 | 22 Zher说的对，用bond提供L2冗余 （nic bonding, nic teaming, whatever) 就好了。
L3的冗余（real ip + floating ip) 一般做cluster 的，而且一般也是2台server. 弄
个cluster 软件整整就可。 |
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c****s
发帖数: 66 | 23 我现在大概理解Zher和RWinUSA的意思了。就是说floating IP是L3冗余。bond是L2冗余。
用bond的话，不用在两个nic卡上配real IP. 只要用bond搞一个IP上去就行。这样1个
nic坏了也没关系。
在一台server上做L3冗余是没有意义的，对吗？
另外，这个“同时你的switch上也得配置etherchannel”是什么意思？
joa, 我的理解是，因为bond是L2, 从server egress的IP包，src就是一个IP.不知道我
的理解对不对。 |
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I*******e
发帖数: 1879 | 24 ☆─────────────────────────────────────☆
ganyaz (dk) 于 (Sat Jul 14 13:57:40 2007) 提到:
I am a beginner.
Is there any "readLine()" or similar methods for the reading of binary files
?
I mean to read binary and interprete them as floating point binary data.
Thanks!
☆─────────────────────────────────────☆
goodbug (好虫) 于 (Sat Jul 14 14:26:31 2007) 提到:
something like
FileInputStream fileinputstream = new FileInputStream(file);
int numberBytes = fileinputstream.available();
|
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g****z
发帖数: 2 | 25 How to read and write binary files (floating point data I/O) in Java?
Thanks! |
|
h******q
发帖数: 97 | 26 int round (float f)
{
}
how to check f to avoid overflow?? thanks |
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g*****e
发帖数: 14 | 27 why this prints true?
#include
using namespace std;
int main() {
double a = 1.9;
float b = 1.9;
cout << (a > b ? "true" : "false") << endl;
} |
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X****r
发帖数: 3557 | 28 Because 1.9 cannot be precisely represented in either float or double,
and the values of cooresponding representations differ. |
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l*****e
发帖数: 276 | 29 试了一下改成1e-4f，两个时间基本一样了。谢谢。
那看来只在64位上跑的程序把float 改成double 只有好处没有坏处喽？不错不错 |
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t****t
发帖数: 6806 | 30 for single data, they are almost the same
however, SIMD instructions can process 4 float each time, for double, only 2
. you do the math. |
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l*****e
发帖数: 276 | 31 我把我程序的float全改double居然加速了25%。该加"f"的时候要加上是个好习惯。随
便编个程序让GCC编译的话，SIMD好象很难被用到啊。 |
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a***a
发帖数: 92 | 32 从外部输入时是使用str输入。输入以后想计算，所以想换回float类型。如何写？ |
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T*****9
发帖数: 2484 | 33 string s;
float f;
stringstream ss;
ss << s;
ss >> f; |
|
r*******y
发帖数: 290 | 34 atof has its limitations:
http://www.cplusplus.com/reference/clibrary/cstdlib/atof.html
double atof ( const char * str );
Return Value
On success, the function returns the converted floating point number as a
double value.
If no valid conversion could be performed, or if the correct value would
cause underflow, a zero value (0.0) is returned.
If the correct value is out of the range of representable values, a positive
or negative HUGE_VAL is returned. |
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w***g
发帖数: 5958 | 35 C++ is going to be dead if converting from string to float takes this effort
. This is obviously not simple enough to be a good method. |
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r*********r
发帖数: 3195 | 36 可以用boost 的 lexical_cast("12.34").
它内部用stringstream 和 <<,>> 实现。 |
|
r*********r
发帖数: 3195 | 37 well, you have to put the usage in the right context.
if you are parsing millions of strings into floats (maybe
in high throughput networking environment?), then yeah,
atof or sscanf run much faster.
if you are only parsing the user input in an interactive
environment, why do you even care the complexity of the function
call? |
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r*********r
发帖数: 3195 | 38 the signature of sscanf is:
int sscanf(const char *, const char *,...)
the arguments are supposed to be passed by their address,
but most beginners often forget to use the "&" operator.
the compiler won't complain since there's no type checking at all.
running the executable will cause a segmentation fault.
another funny fact is that if you switch the string to be scanned
and the format string, it still runs! like the following:
float x = 4.3;
...
sscanf("%f", "12.34", &x);
the x will still be 4 |
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c**a
发帖数: 316 | 39 请问
float -> double 是conversion 还是 promotion？
double -> long double 呢？
找了半天，没找到哪里有答案。。。 |
|
b***y
发帖数: 2799 | 40 ☆─────────────────────────────────────☆
Savant (期待奇迹中) 于 (Sun Sep 18 22:35:12 2005) 提到:
i have two lines of code as:
//////
float myFloat = 99999999;
printf("%f", myFloat);
//////
it gives 100000000.000000
i am really confused about the result. does somebody have experience on this?
how can i resolve this (giving the correct output) without changing the data
type
to integer or double? thanks.
☆─────────────────────────────────────☆
thrust (Thrust Jaeina) 于 (Mon Sep 19 00:23:48 2005) 提到 |
|
r*********e
发帖数: 29495 | 41 谢谢了，已经搞定，使用IEEE 754 float-point format，倒是挺简单 |
|
n**********E
发帖数: 157 | 42 I am sorry that the original post is misleading. Please see the detailed description of the problem below.
They are a lot of floating point calculation in the code.
Basically, i am doing an interpolation from a position to the
closest grid point. It is a 1d problem.
The domain is from (-L, L) and N is the number of grid point at a half
domain.
The grid size is dv, where dv = L/N; The grid is cell centered (-0.5
in the code below).
L, dv are declared to be double type and N to be integer type.
Be |
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j****i
发帖数: 305 | 43 How to find the minimum number x such that 1 + x > 1 in floating number
system in c++? |
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U*****e
发帖数: 505 | 44 memory里floating point是按2的多少次方存的，十进制里小数点后两位在二进制里不
是整的。
如果你只关心小数点后两位，x100转换成整数再比较就好了。
或者fabs(x1-x2)<0.01更快点。 |
|
f******y
发帖数: 2971 | 45 agree with this. However, I never use '==' to compare any floating type
variables. |
|
G***G
发帖数: 16778 | 46 in a sql server database, which format do you like for a number,
float or decimal?
how to convert the number to scientific number and show it in webpage? |
|
S**I
发帖数: 15689 | 47 Learn how float numbers are represented in binary forms first, then you'll
understand. |
|
S**I
发帖数: 15689 | 48 If you use double type intead of float, you can get what you want (still not
safe though). |
|
