what is the value of epsilon please love and peace

From Genesis3D, its-

#define GE_EPSILON				((geFloat)0.000797f) 

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If you mean the smallest float value, you should include the file float.h in your project and use FLT_MIN. For other similar constants, look on MSDN under float.h.

[edited by - jeeky on April 27, 2002 9:53:57 AM]

what exactly is an epsilon (the smallest float valuew im gessing). what is it used for?

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i don''t have the float.h because i use delphi so it is opp so i need a value
or if there is an equivalente can you give me it please

love and peace

OK.
If my last post was ignored.
Let me make it simple for you-

Epsilon == 0.000797

if you dont know what ''=='' means, it means

Equal to

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float.h is a standard header, so should be available in any implementation. I know it is available on VC++, linux, and sgi (I just looked on the web. Maybe you should, too.).

BTW, there is a difference between FLT_MIN and FLT_EPSILON. FLT_MIN is the smallest positive float. FLT_EPSILON is the smallest x where ((1.0f + x) != 1.0f).

Once again, all of this info is readily available on the web. Just do a search under float.h.

thank you

but i''m sorry if i disturbed you


it exat the smallest value

so thank you again

love and peace

And now, direct from MSDN, the web, and many other easy to access locations:

EPSILON: Smallest positive number x, such that x + 1.0 is not equal to 1.0

FLT_EPSILON 1.192092896e–07F
DBL_EPSILON 2.2204460492503131e–016
LDBL_EPSILON 2.2204460492503131e–016

MIN: Minimum positive value.
FLT_MIN 1.175494351e–38F
DBL_MIN 2.2250738585072014e–308
LDBL_MIN 2.2250738585072014e–308

Although I gave in and handed you these numbers without you having to expend any effort on your part, there are many other handy constants in float.h that you may want to use someday. Therefore, I still recommend that you go look for it.







[edited by - jeeky on April 27, 2002 10:32:23 AM]

Thank you jeeky for posting a proper definition for the meaning of epsilon. And thanks to the rest for posting #defined values, which are often useful in real-world applications, e.g., games!

Graham Rhodes
Senior Scientist
Applied Research Associates, Inc.