replace sprintf by std::stringstream; add another IpoptData::Append_info_string

Author: svigerske

ChangeLog.md

@@ -18,7 +18,7 @@ More detailed information about incremental changes can be found in the
 - New option `mumps_mpi_communicator` to specify the MPI communicator when using
   an MPI-enabled build of MUMPS [#790, by Alex Tyler Chapman].
 - Updated build system to current autotools versions; initial support for icx/ifx and flang
-- Removed use of `vsprintf`.
+- Removed use of `vsprintf` and `sprintf`. Added `IpoptData::Append_info_string(std::string,double)`.
 
 ### 3.14.16 (2024-04-22)
 

contrib/sIPOPT/src/SensAlgorithm.cpp

@@ -7,8 +7,8 @@
 #include "SensAlgorithm.hpp"
 #include "SensUtils.hpp"
 #include "IpSmartPtr.hpp"
-
 #include "IpVector.hpp"
+#include "IpUtils.hpp"
 
 namespace Ipopt
 {
@@ -243,7 +243,7 @@ SensAlgorithmExitStatus SensAlgorithm::ComputeSensitivityMatrix(void)
             }
          }
 
-         sprintf(buffer, "Column %" IPOPT_INDEX_FORMAT, idx_ipopt[Scol]);
+         Snprintf(buffer, sizeof(buffer), "Column %" IPOPT_INDEX_FORMAT, idx_ipopt[Scol]);
 
          sens_step_calc_->SetSchurDriver(driver_vec_[0]);
 

src/Algorithm/Inexact/IpInexactLSAcceptor.cpp

@@ -473,15 +473,11 @@ char InexactLSAcceptor::UpdateForNextIteration(
    if( last_nu_ != nu_ )
    {
       info_alpha_primal_char = 'n';
-      char snu[40];
-      sprintf(snu, " nu=%8.2e", nu_);
-      IpData().Append_info_string(snu);
+      IpData().Append_info_string(" nu", nu_);
    }
    if( flexible_penalty_function_ && last_nu_low_ != nu_low_ )
    {
-      char snu[40];
-      sprintf(snu, " nl=%8.2e", nu_low_);
-      IpData().Append_info_string(snu);
+      IpData().Append_info_string(" nl", nu_low_);
       if( info_alpha_primal_char == 'k' )
       {
          info_alpha_primal_char = 'l';

src/Algorithm/IpIpoptData.hpp

@@ -13,6 +13,9 @@
 #include "IpRegOptions.hpp"
 #include "IpTimingStatistics.hpp"
 
+#include <sstream>
+#include <iomanip>
+
 namespace Ipopt
 {
 
@@ -519,6 +522,16 @@ class IPOPTLIB_EXPORT IpoptData: public ReferencedObject
    {
       info_string_ += add_str;
    }
+   /// @since 3.14.17
+   void Append_info_string(
+      const std::string& add_str,
+      double             value
+   )
+   {
+      std::ostringstream sstream;
+      sstream << add_str << '=' << std::setw(8) << std::setprecision(2) << std::scientific << value;
+      info_string_ += sstream.str();
+   }
    const std::string& info_string() const
    {
       return info_string_;

src/Algorithm/IpLoqoMuOracle.cpp

@@ -57,11 +57,8 @@ bool LoqoMuOracle::CalculateMu(
                   "  Barrier parameter proposed by LOQO rule is %lf\n", mu);
 
    /*
-   char ssigma[40];
-   sprintf(ssigma, " sigma=%8.2e", sigma);
-   IpData().Append_info_string(ssigma);
-   sprintf(ssigma, " xi=%8.2e ", IpCq().curr_centrality_measure());
-   IpData().Append_info_string(ssigma);
+   IpData().Append_info_string(" sigma", sigma);
+   IpData().Append_info_string(" xi", IpCq().curr_centrality_measure());
    */
 
    new_mu = Max(Min(mu_max, mu), mu_min);

src/Algorithm/IpPenaltyLSAcceptor.cpp

@@ -417,9 +417,7 @@ char PenaltyLSAcceptor::UpdateForNextIteration(
    if( last_nu_ != nu_ )
    {
       info_alpha_primal_char = 'n';
-      char snu[40];
-      sprintf(snu, " nu=%8.2e", nu_);
-      IpData().Append_info_string(snu);
+      IpData().Append_info_string(" nu", nu_);
    }
    else
    {

src/Algorithm/IpProbingMuOracle.cpp

@@ -125,11 +125,8 @@ bool ProbingMuOracle::CalculateMu(
    IpData().set_delta_aff(step);
    IpData().SetHaveAffineDeltas(true);
 
-   char ssigma[40];
-   sprintf(ssigma, " sigma=%8.2e", sigma);
-   IpData().Append_info_string(ssigma);
-   //sprintf(ssigma, " xi=%8.2e ", IpCq().curr_centrality_measure());
-   //IpData().Append_info_string(ssigma);
+   IpData().Append_info_string(" sigma", sigma);
+   //IpData().Append_info_string(" xi", IpCq().curr_centrality_measure());
 
    new_mu = Max(Min(mu, mu_max), mu_min);
    return true;