/C++/Round double to n decimal places c++

Round double to n decimal places c++

float roundoff(float value, unsigned char prec)
{
  float pow_10 = pow(10.0f, (float)prec);
  return round(value * pow_10) / pow_10;
}

auto rounded = roundoff(100.123456, 3);
// rounded = 100.123;

Source: stackoverflow.com

Round double to n decimal places c++

value = round( value * 100.0 ) / 100.0; // 2 decimal places
value = round( value * 1000.0 ) / 1000.0; // 3 decimal places

Source: stackoverflow.com

Similar codes

0 vote133 views1 answer
Power Function in C/C++
C++
1 vote124 views1 answer
Start with pure c++ and opengl gamedev
C++
1 vote139 views1 answer
Sum of stack c++
C++
0 vote130 views1 answer
C++ sort
C++
0 vote136 views1 answer
Error: ‘CV_WINDOW_AUTOSIZE’ was not declared in this scope
C++
1 vote136 views1 answer
Qt remove resize handle
C++
1 vote125 views1 answer
Doubly linked list c++ code
C++
25 votes117 views6 answers
Fibonacci
C++
0 vote132 views1 answer
Cuda allocate memory
C++
0 vote140 views1 answer
Store arbitrarly large vector of doubles c++
C++