Function replace_all

test/blas.cpp:600–607

};

void replace_all(std::string &str, const std::string &oldStr,
                 const std::string &newStr) {
    std::string::size_type pos = 0u;
    while ((pos = str.find(oldStr, pos)) != std::string::npos) {
        str.replace(pos, oldStr.length(), newStr);
        pos += newStr.length();
    }
}

std::string concat_dim4(dim4 d) {
    std::stringstream ss;