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浮点数在内存中的表示 - C/C++ - 清泛网 - 专注C++内核技术
...g.h>
#include <limits>
int _tmain(int argc, _TCHAR* argv[])
{
float f1 = FLT_MIN;
printf("%f\n", f1);
f1 = FLT_MAX;
printf("%f\n", f1);
// 0 10000101 11110110000000000000000
void * p = (void *)0x42fb0000;
memcpy(&f1, &p, 4);
printf("%f\n", f1);
// 1 11111111 00000000000000...
浮点数在内存中的表示 - C/C++ - 清泛网 - 专注C++内核技术
...g.h>
#include <limits>
int _tmain(int argc, _TCHAR* argv[])
{
float f1 = FLT_MIN;
printf("%f\n", f1);
f1 = FLT_MAX;
printf("%f\n", f1);
// 0 10000101 11110110000000000000000
void * p = (void *)0x42fb0000;
memcpy(&f1, &p, 4);
printf("%f\n", f1);
// 1 11111111 00000000000000...
浮点数在内存中的表示 - C/C++ - 清泛网 - 专注C++内核技术
...g.h>
#include <limits>
int _tmain(int argc, _TCHAR* argv[])
{
float f1 = FLT_MIN;
printf("%f\n", f1);
f1 = FLT_MAX;
printf("%f\n", f1);
// 0 10000101 11110110000000000000000
void * p = (void *)0x42fb0000;
memcpy(&f1, &p, 4);
printf("%f\n", f1);
// 1 11111111 00000000000000...
浮点数在内存中的表示 - C/C++ - 清泛网 - 专注C++内核技术
...g.h>
#include <limits>
int _tmain(int argc, _TCHAR* argv[])
{
float f1 = FLT_MIN;
printf("%f\n", f1);
f1 = FLT_MAX;
printf("%f\n", f1);
// 0 10000101 11110110000000000000000
void * p = (void *)0x42fb0000;
memcpy(&f1, &p, 4);
printf("%f\n", f1);
// 1 11111111 00000000000000...
浮点数在内存中的表示 - C/C++ - 清泛网 - 专注C/C++及内核技术
...g.h>
#include <limits>
int _tmain(int argc, _TCHAR* argv[])
{
float f1 = FLT_MIN;
printf("%f\n", f1);
f1 = FLT_MAX;
printf("%f\n", f1);
// 0 10000101 11110110000000000000000
void * p = (void *)0x42fb0000;
memcpy(&f1, &p, 4);
printf("%f\n", f1);
// 1 11111111 00000000000000...
浮点数在内存中的表示 - C/C++ - 清泛网 - 专注C/C++及内核技术
...g.h>
#include <limits>
int _tmain(int argc, _TCHAR* argv[])
{
float f1 = FLT_MIN;
printf("%f\n", f1);
f1 = FLT_MAX;
printf("%f\n", f1);
// 0 10000101 11110110000000000000000
void * p = (void *)0x42fb0000;
memcpy(&f1, &p, 4);
printf("%f\n", f1);
// 1 11111111 00000000000000...
How to execute a raw update sql with dynamic binding in rails
...t = ActiveRecord::Base.connection.raw_connection.prepare("update table set f1=? where f2=? and f3=?")
st.execute(f1, f2, f3)
st.close
I'm not sure if there are other ramifications to doing this (connections left open, etc). I would trace the Rails code for a normal update to see what it's doing as...
Global variables in Javascript across multiple files
...
answered May 28 '10 at 21:57
tvanfossontvanfosson
475k9191 gold badges672672 silver badges767767 bronze badges
...
Is there a command to list all Unix group names? [closed]
...
miken32
32.1k1212 gold badges7171 silver badges8888 bronze badges
answered Dec 27 '12 at 19:29
ArpitArpit
...
Get the latest record from mongodb collection
... want it to look nice
– Anthony
Jan 21 '16 at 19:26
So, what's the difference with this order : db.collection.find().s...