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c:math.h:ldexp [2024/02/16 01:05] (current) |
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+ | {{keywords>wiki library source code example reference}} | ||
+ | ===== ldexp ===== | ||
+ | <code c> | ||
+ | double ldexp(double , int exp); | ||
+ | </code> | ||
+ | Returns x times 2 raised to n | ||
+ | |||
+ | |||
+ | ===== C Sourcecode Example ===== | ||
+ | compile in linux with: gcc ldexp.c -o ldexp **-lm** -Wall | ||
+ | <code c> | ||
+ | #include <stdio.h> /* including standard library */ | ||
+ | //#include <windows.h> /* uncomment this for Windows */ | ||
+ | |||
+ | #include <math.h> /* including math library */ | ||
+ | |||
+ | int main ( void ) | ||
+ | { | ||
+ | |||
+ | printf ("4.2 raised to 2 is %f\n", ldexp(4.2, 2)); | ||
+ | return 0; | ||
+ | } | ||
+ | |||
+ | |||
+ | |||
+ | </code> | ||
+ | |||
+ | ==== output ==== | ||
+ | output: | ||
+ | user@host:~$ ./ldexp | ||
+ | 4.2 raised to 2 is 16.8000 | ||