IntFromHexStr

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API Reference

IntFromHexStr

Description

Parse a hexadecimal string into an integer. This parser expects hexadecimal digits only and does not accept a 0x prefix.

Aborts on invalid characters.

Parameters

Name	Direction	Description
`hex`	in	Hexadecimal digit string

Usage example (from documentation)

  Int value = IntFromHexStr("deadbeef");

Returns

Parsed integer value.

Usage example (Cross-references)

Usage examples (Cross-references)

In Int.c:582:

    }
    
    Int IntFromHexStr(const char *hex) {
        if (!hex) {
            LOG_FATAL("hex is NULL");

In Int.Convert.c:202:

    
        const char *hex   = "deadbeefcafebabe1234";
        Int         value = IntFromHexStr(hex);
        Str         text  = IntToHexStr(&value);

In Int.Convert.c:227:

    
    bool test_int_from_hex_invalid_digit(void) {
        WriteFmt("Testing IntFromHexStr invalid digit handling\n");
    
        IntFromHexStr("12g3");

In Int.Convert.c:229:

        WriteFmt("Testing IntFromHexStr invalid digit handling\n");
    
        IntFromHexStr("12g3");
        return false;
    }

In Int.Convert.c:295:

    
    bool test_int_from_hex_null(void) {
        WriteFmt("Testing IntFromHexStr NULL handling\n");
    
        IntFromHexStr(NULL);

In Int.Convert.c:297:

        WriteFmt("Testing IntFromHexStr NULL handling\n");
    
        IntFromHexStr(NULL);
        return false;
    }

In Io.Write.c:626:

    
        Int big_dec = IntFromStr("123456789012345678901234567890");
        Int hex_val = IntFromHexStr("deadbeefcafebabe1234");
        Int bin_val = IntFromBinary("10100011");
        Int oct_val = IntFrom(493);

Last updated on April 20, 2026

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