---
name: "streqvcmp"
section: "3"
platform: "linux"
package: "autogen"
version: "5.18.16-6"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/streqvcmp"
---

# streqvcmp(3)

compare two strings with an equivalence mapping

## NAME

streqvcmp - compare two strings with an equivalence mapping

## SYNOPSIS

\#include \<*your-opts.h*\>\
 cc \[...\] -o outfile infile.c -l**opts** \[...\]

int **streqvcmp**(char const \* *str1*, char const \* *str2*);

## DESCRIPTION

Using a character mapping, two strings are compared for "equivalence". Each input character is mapped to a comparison character and the mapped-to characters are compared for the two NUL terminated input strings. This function name is mapped to option\_streqvcmp so as to not conflict with the POSIX name space.

- *str1*

  first string

- *str2*

  second string

## RETURN VALUE

the difference between two differing characters

## ERRORS

none checked.  Caller responsible for seg faults.

## SEE ALSO

The *info* documentation for the -l*opts* library.\
 [ao\_string\_tokenize(3)](/ao_string_tokenize/3.md), [configFileLoad(3)](/configFileLoad/3.md), [optionFileLoad(3)](/optionFileLoad/3.md), [optionFindNextValue(3)](/optionFindNextValue/3.md), [optionFindValue(3)](/optionFindValue/3.md), [optionFree(3)](/optionFree/3.md), [optionGetValue(3)](/optionGetValue/3.md), [optionLoadLine(3)](/optionLoadLine/3.md), [optionMemberList(3)](/optionMemberList/3.md), [optionNextValue(3)](/optionNextValue/3.md), [optionOnlyUsage(3)](/optionOnlyUsage/3.md), [optionPrintVersion(3)](/optionPrintVersion/3.md), [optionPrintVersionAndReturn(3)](/optionPrintVersionAndReturn/3.md), [optionProcess(3)](/optionProcess/3.md), [optionRestore(3)](/optionRestore/3.md), [optionSaveFile(3)](/optionSaveFile/3.md), [optionSaveState(3)](/optionSaveState/3.md), [optionUnloadNested(3)](/optionUnloadNested/3.md), [optionVersion(3)](/optionVersion/3.md), [strequate(3)](/strequate/3.md), [streqvmap(3)](/streqvmap/3.md), [strneqvcmp(3)](/strneqvcmp/3.md), [strtransform(3)](/strtransform/3.md),