Function validateAndSetDefaultValidationEpsilon

quest/src/core/envvars.cpp:110–123

void validateAndSetDefaultValidationEpsilon(const char* caller) {

    // permit unspecified, falling back to the hardcoded precision-specific default
    string name = envvar_names::DEFAULT_VALIDATION_EPSILON;
    if (!isEnvVarSpecified(name))
        return;
    
    // otherwise, validate user passed a positive real integer (or zero)
    string value = getSpecifiedEnvVarValue(name);
    validate_envVarDefaultValidationEpsilon(value, caller);

    // overwrite default env-var value
    envvar_values::DEFAULT_VALIDATION_EPSILON = parser_parseReal(value);    
}