---
name: "FcUtf16Len"
section: "3"
platform: "linux"
package: "fontconfig"
version: "2:2.18.3-2"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/FcUtf16Len"
---

# FcUtf16Len(3)

count UTF-16 encoded chars

## NAME

FcUtf16Len - count UTF-16 encoded chars

## SYNOPSIS

**#include \<fontconfig/fontconfig.h\>**

**FcBool FcUtf16Len (FcChar8 \****src***, FcEndian** *endian***, int** *len***, int \****nchar***, int \****wchar***);**

## DESCRIPTION

Counts the number of Unicode chars in *len* bytes of *src*.  Bytes of *src* are combined into 16-bit units according to *endian*. Places that count in *nchar*. *wchar* contains 1, 2 or 4 depending on the number of bytes needed to hold the largest Unicode char counted.  The return value indicates whether *string* is a well-formed UTF16 string.