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mpf: fix some string copies

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This commit is contained in:
Nuno Lopes 2022-10-11 11:59:29 +01:00
parent 1b3684c9c1
commit a41520acf1
1 changed files with 7 additions and 7 deletions
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14
src/util/mpf.cpp
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@ -212,16 +212,16 @@ void mpf_manager::set(mpf & o, unsigned ebits, unsigned sbits, mpf_rounding_mode
size_t e_pos = v.find('p'); size_t e_pos = v.find('p');
if (e_pos == std::string_view::npos) e_pos = v.find('P'); if (e_pos == std::string_view::npos) e_pos = v.find('P');
const char *f = (e_pos != std::string_view::npos) ? v.substr(0, e_pos).data() : v.data(); auto f = (e_pos != std::string_view::npos) ? std::string(v.substr(0, e_pos)) : std::string(v);
const char *e = (e_pos != std::string_view::npos) ? v.substr(e_pos+1).data() : "0"; auto e = (e_pos != std::string_view::npos) ? std::string(v.substr(e_pos+1)) : "0";
TRACE("mpf_dbg", tout << "sgn = " << sgn << " f = " << f << " e = " << e << std::endl;); TRACE("mpf_dbg", tout << "sgn = " << sgn << " f = " << f << " e = " << e << std::endl;);
scoped_mpq q(m_mpq_manager); scoped_mpq q(m_mpq_manager);
m_mpq_manager.set(q, f); m_mpq_manager.set(q, f.c_str());
scoped_mpz ex(m_mpq_manager); scoped_mpz ex(m_mpq_manager);
m_mpz_manager.set(ex, e); m_mpz_manager.set(ex, e.c_str());
set(o, ebits, sbits, rm, ex, q); set(o, ebits, sbits, rm, ex, q);
o.sign = sgn; o.sign = sgn;
@ -1562,7 +1562,7 @@ std::string mpf_manager::to_string(mpf const & x) {
if (m_mpq_manager.is_int(r)) if (m_mpq_manager.is_int(r))
ss << ".0"; ss << ".0";
ss << " " << exponent; ss << " " << exponent;
res += ss.str(); res += std::move(ss).str();
} }
} }
@ -1600,7 +1600,7 @@ std::string mpf_manager::to_string_raw(mpf const & x) {
res += " "; res += " ";
std::stringstream ss(""); std::stringstream ss("");
ss << exp(x); ss << exp(x);
res += ss.str(); res += std::move(ss).str();
if (is_normal(x)) if (is_normal(x))
res += " N"; res += " N";
else else
@ -1629,7 +1629,7 @@ std::string mpf_manager::to_string_hexfloat(mpf const & x) {
ss.setf(ff); ss.setf(ff);
ss.precision(13); ss.precision(13);
ss << std::hexfloat << to_double(x); ss << std::hexfloat << to_double(x);
return ss.str(); return std::move(ss).str();
} }
std::string mpf_manager::to_string_binary(mpf const & x, unsigned upper_extra, unsigned lower_extra) { std::string mpf_manager::to_string_binary(mpf const & x, unsigned upper_extra, unsigned lower_extra) {