Jürgen Knödlseder / gammalib

Commit 941cf247a9116fb7108a2289f8a9a1dc2b034c96

Authored by Jürgen Knödlseder
1 parent b4b69b15

Add optional precision parameter to str() functions for floating point values. 

The precision parameter allows setting the number of digits after the comma.
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Showing 2 changed files with 21 additions and 5 deletions
include/GTools.hpp
  View file @941cf24
... ... @@ -57,8 +57,8 @@ namespace gammalib {
57 57 std::string str(const int& value);
58 58 std::string str(const long int& value);
59 59 std::string str(const long long int& value);
60   - std::string str(const float& value);
61   - std::string str(const double& value);
  60 + std::string str(const float& value, const int& precision = 0);
  61 + std::string str(const double& value, const int& precision = 0);
62 62 char* tochar(const std::string& arg);
63 63 short toshort(const std::string& arg);
64 64 unsigned short toushort(const std::string& arg);
... ...
src/support/GTools.cpp
  View file @941cf24
... ... @@ -374,16 +374,24 @@ std::string gammalib::str(const long long int& value)
374 374 return s_value.str();
375 375 }
376 376  
377   -
  377 +
378 378 /***********************************************************************//**
379 379 * @brief Convert single precision value into string
380 380 *
381 381 * @param[in] value Single precision value to be converted into string.
  382 + * @param[in] precision Floating point precision (optional).
382 383 ***************************************************************************/
383   -std::string gammalib::str(const float& value)
  384 +std::string gammalib::str(const float& value, const int& precision)
384 385 {
385 386 std::ostringstream s_value;
  387 + if (precision > 0) {
  388 + s_value.precision(precision);
  389 + s_value.setf(std::ios::fixed, std::ios::floatfield);
  390 + }
386 391 s_value << value;
  392 + if (precision > 0) {
  393 + s_value.unsetf(std::ios::floatfield);
  394 + }
387 395 return s_value.str();
388 396 }
389 397  
... ... @@ -392,11 +400,19 @@ std::string gammalib::str(const float&amp; value)
392 400 * @brief Convert double precision value into string
393 401 *
394 402 * @param[in] value Double precision value to be converted into string.
  403 + * @param[in] precision Floating point precision (optional).
395 404 ***************************************************************************/
396   -std::string gammalib::str(const double& value)
  405 +std::string gammalib::str(const double& value, const int& precision)
397 406 {
398 407 std::ostringstream s_value;
  408 + if (precision > 0) {
  409 + s_value.precision(precision);
  410 + s_value.setf(std::ios::fixed, std::ios::floatfield);
  411 + }
399 412 s_value << value;
  413 + if (precision > 0) {
  414 + s_value.unsetf(std::ios::floatfield);
  415 + }
400 416 return s_value.str();
401 417 }
402 418  
... ...