kylemcdonald

rondy

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

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Effective Engineer - Notes

• By Edmond Lau
• Highly Recommended 👍
• http://www.theeffectiveengineer.com/

What's an Effective Engineer?

bgstaal

float f = -0.123456;
size_t n = sizeof(f); //number of bytes in a float
unsigned char buffer[n]; //create buffer of n bytes
memcpy(&buffer, &f, n); // copy underlying bytes from float to buffer
string str((char *)buffer, n); //instantiate new string with contents of buffer
float f2;
memcpy(&f2, str.data(), n); //copy bytes from string data prop to f2
printf("%f\n", f2); // prints -0.123456