MATH.DOMAIN.FE_INVALID : 例外FE

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CodeSonar^® 9.2p0

CONFIDENTIAL

CodeSecure Inc

MATH.DOMAIN.FE_INVALID : 例外FE_INVALIDの発生

要旨

浮動小数点演算関数の入力値として定義値エラーとなる値を使用した場合、例外"FE_INVALID"が発生します。

プロパティ

MisraC2025

MisraC2025:D.4.11

The validity of values passed to library functions shall be checked

MisraC2023

MisraC2023:D.4.11

The validity of values passed to library functions shall be checked

Misra2012

Misra2012:D.4.11

The validity of values passed to library functions shall be checked

Misra2004

Misra2004:20.3

The validity of values passed to library functions shall be checked

AUTOSARC++14

AUTOSARC++14:A0-4-4

Range, domain and pole errors shall be checked when using math functions.

MisraC++2023

MisraC++2023:0.3.2

A function call shall not violate the function's preconditions

CWE

CWE:628

Function Call with Incorrectly Specified Arguments

CWE:687

Function Call With Incorrectly Specified Argument Value

CWE:688

Function Call With Incorrect Variable or Reference as Argument

CERT-C

CERT-C:FLP32-C

Prevent or detect domain and range errors in math functions

Insecure design

Insecure Design

CodeSonar ships with library models that allow it to functions such as libm remainder() that may raise FE_INVALID. If one of these functions is called with a finite value in the numerator parameter position and zero in the denominator parameter position, a warning will be issued.

If you have created a custom library model for some function f() in terms of one of these existing models, calls to f() will also be capable of triggering Raises FE_INVALID warnings.

例

#include <math.h>

double use_fmod(double ind){
    double a = fmod(1,1);                 /* ok */
    double b = fmod(1,0);     /* 'Raises FE_INVALID' warning issued here */
    double c = fmod(ind,0);   /* 'Raises FE_INVALID' warning issued here */
    double d = fmod(ind,ind); /* EVIDENCED ONLY: 'Raises FE_INVALID' warning issued here
                               * if CodeSonar has evidence that use_fmod() is called on a value equal to 0.  */
    return a+b+c+d;
}

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