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isinf

From cppreference.com
< c | numeric | math
 
 
 
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Defined in header <math.h>
#define isinf(arg) /* implementation defined */
(since C99)

Determines if the given floating point number arg is positive or negative infinity. The macro returns an integral value.

[edit] Parameters

arg - floating point value

[edit] Return value

Nonzero integral value if arg is infinite, 0 otherwise.

[edit] See also

categorizes the given floating point value
(function) [edit]
checks if the given number has finite value
(function) [edit]
(C99)
checks if the given number is NaN
(function) [edit]
checks if the given number is normal
(function) [edit]