how to convert float to int16?

[ronnarone.r]

I want to convert float to int16. How to?

[SherpaDoug]

What is wrong with the obvious:

long L;
float F = 12345.6;

L = F;

Should leave L = 12345
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[Gavin Pinto]

[Ttelmah]

Both Sherpa Dog's, and Gavin Pinto's answers, do exactly the same thing.
C peforms an automatic 'cast', when variables are assigned to other variables of different types.
Where they would differ, is if you do something 'with' the value on the right of the equation. The explicit cast as shown by Gavin, converts the value 'then and there', into a value of the lower type. The automatic cast, does it at the time the value is put into the variable. Example of the difference:

[Gavin Pinto]

In addition I will show how float is stored. It is stored with 32 bits in memory.

Now look at my demonstration below

Example 1

int buff[10];

int32 *fp;
float F =123.45;
fp = &F;
itoa(*fp,16,buff);
puts(buff);

on hyterminal you will see

66E67685

This is bit pattern in memory.

23 bit mantissa, sign bit, 8 bit exponent with bias of 7F

Example 2

int buff[10];

int32 *fp;
float F =123.45E20;
fp = &F;
itoa(*fp,16,buff);
puts(buff);

on hyterminal you will see

534E27C8

This is bit pattern in memory.

23 bit mantissa, sign bit, 8 bit exponent with bias of 7F



Best wishes
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Clear Logic