RetroSearch Browse

Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://cplusplus.com/FE_INVALID below:

macro

<cfenv>

FE_INVALID

Invalid argument exception

This macro expands to a value of type int that identifies the floating-point exception raised on invalid arguments.

Invalid argument exceptions are raised to signal that the argument passed to a function is out of its domain (i.e., the function is not defined for that value), such as sqrt(-1.0).

The value returned by a function that raises this exception is unspecified.

FE_INVALID is defined as a value that is an exact power of two, allowing several floating-point exceptions to be combined (using the bitwise OR operator: |) into a single value:

macro value description FE_DIVBYZERO Pole error: division by zero, or some other asymptotically infinite result (from finite arguments). FE_INEXACT Inexact: the result is not exact. FE_INVALID Domain error: At least one of the arguments is a value for which the function is not defined. FE_OVERFLOW Overflow range error: The result is too large in magnitude to be represented as a value of the return type. FE_UNDERFLOW Underflow range error: The result is too small in magnitude to be represented as a value of the return type. FE_ALL_EXCEPT All exceptions (selects all of the exceptions supported by the implementation). Certain library implementations may support additional floating-point exception values (with their corresponding macros also beginning with FE_).

Libraries may define in

<fenv.h>

only the macro values above they support (the others may not be defined).

FE_INVALID

is always defined if

math_errhandling

has

MATH_ERREXCEPT

set.

At least all of the above macro values are defined in

<cfenv>

(even if not supported by the implementation).