Truncate Decimal number not Round Off

Question

Possible Duplicate    c  - How do I round a decimal value to 2 decimal places  for output on a page        I want to truncate the decimals like below  i e    2 22939393 -  2 229 2 22977777 -  2 229

User · Accepted Answer

double d   2 22977777  d      double     int   d   1000 0        1000 0     Of course  this won t work if you re trying to truncate rounding error  but it should work fine with the values you give in your examples   See the first two answers to this question for details on why it won t work sometimes

User · Answer

Maybe another quick solution could be    gt  gt  gt  float    1f    1 00001  1 0  gt  gt  gt  float    3f    1 23001  1 23  gt  gt  gt  float    5f    1 23001  1 23001

User · Answer

Here s an extension method which does not suffer from integer overflow  like some of the above answers do   It also caches some powers of 10 for efficiency   static double   pow10     1e0  1e1  1e2  1e3  1e4  1e5  1e6  1e7  1e8  1e9  1e10    public static double Truncate this double x  int precision        if  precision  lt  0          throw new ArgumentException        if  precision    0          return Math Truncate x       double m   precision  gt   pow10 Length   Math Pow 10  precision    pow10 precision       return Math Truncate x   m    m

User · Answer

What format are you wanting the output   If you re happy with a string then consider the following C  code   double num   3 12345  num ToString  G3      The result will be  3 12    This link might be of use if you re using  NET  http   msdn microsoft com en-us library dwhawy9k aspx  I hope that helps    but unless you identify than language you are using and the format in which you want the output it is difficult to suggest an appropriate solution

User · Answer

Try this   decimal original   GetSomeDecimal       22222 22939393 int number1    int original     contains only integer value of origina number decimal temporary   original - number1     contains only decimal value of original number int decimalPlaces   GetDecimalPlaces       3 temporary     Math Pow 10  decimalPlaces       moves some decimal places to integer temporary    int temporary     removes all decimal places temporary     Math Pow 10  decimalPlaces       moves integer back to decimal places decimal result   original   temporary     add integer and decimal places together   It can be writen shorter  but this is more descriptive   EDIT  Short way   decimal original   GetSomeDecimal       22222 22939393 int decimalPlaces   GetDecimalPlaces       3 decimal result     int original       int  original   Math Pow 10  decimalPlaces      Math Pow 10  decimalPlaces

User · Answer

Try this   decimal original   GetSomeDecimal       22222 22939393 int number1    int original     contains only integer value of origina number decimal temporary   original - number1     contains only decimal value of original number int decimalPlaces   GetDecimalPlaces       3 temporary     Math Pow 10  decimalPlaces       moves some decimal places to integer temporary    int temporary     removes all decimal places temporary     Math Pow 10  decimalPlaces       moves integer back to decimal places decimal result   original   temporary     add integer and decimal places together   It can be writen shorter  but this is more descriptive   EDIT  Short way   decimal original   GetSomeDecimal       22222 22939393 int decimalPlaces   GetDecimalPlaces       3 decimal result     int original       int  original   Math Pow 10  decimalPlaces      Math Pow 10  decimalPlaces

User · Answer

This is similar to TcKs suggestion above  but using math truncate rather than int conversions  VB  but you ll get the idea  Private Function TruncateToDecimalPlace byval ToTruncate as decimal  byval DecimalPlaces as integer  as double  dim power as decimal   Math Pow 10  decimalplaces  return math truncate totruncate   power    power end function

User · Answer

Try this   double d   2 22912312515  int demention   3  double truncate   Math Truncate d    Math Truncate  d - Math Truncate d     Math Pow 10 0  demention     Math Pow 10 0  demention

User · Answer

A function to truncate an arbitrary number of decimals    public decimal Truncate decimal number  int digits      decimal stepper    decimal  Math Pow 10 0   double digits      int temp    int  stepper   number     return  decimal temp   stepper

User · Answer

What format are you wanting the output   If you re happy with a string then consider the following C  code   double num   3 12345  num ToString  G3      The result will be  3 12    This link might be of use if you re using  NET  http   msdn microsoft com en-us library dwhawy9k aspx  I hope that helps    but unless you identify than language you are using and the format in which you want the output it is difficult to suggest an appropriate solution

User · Answer

What format are you wanting the output   If you re happy with a string then consider the following C  code   double num   3 12345  num ToString  G3      The result will be  3 12    This link might be of use if you re using  NET  http   msdn microsoft com en-us library dwhawy9k aspx  I hope that helps    but unless you identify than language you are using and the format in which you want the output it is difficult to suggest an appropriate solution

User · Answer

You can use Math Round   decimal rounded   Math Round 2 22939393  3     Returns 2 229   Or you can use ToString with the N3 numeric format   string roundedNumber   number ToString  N3      EDIT  Since you don t want rounding  you can easily use Math Truncate   Math Truncate 2 22977777   1000    1000    Returns 2 229

User · Answer

A function to truncate an arbitrary number of decimals    public decimal Truncate decimal number  int digits      decimal stepper    decimal  Math Pow 10 0   double digits      int temp    int  stepper   number     return  decimal temp   stepper

User · Answer

Forget Everything just check out this  double num   2 22939393  num    Convert ToDouble num ToString   0 000

User · Answer

You can use Math Round   decimal rounded   Math Round 2 22939393  3     Returns 2 229   Or you can use ToString with the N3 numeric format   string roundedNumber   number ToString  N3      EDIT  Since you don t want rounding  you can easily use Math Truncate   Math Truncate 2 22977777   1000    1000    Returns 2 229

User · Answer

Forget Everything just check out this  double num   2 22939393  num    Convert ToDouble num ToString   0 000

User · Answer

Here s an extension method which does not suffer from integer overflow  like some of the above answers do   It also caches some powers of 10 for efficiency   static double   pow10     1e0  1e1  1e2  1e3  1e4  1e5  1e6  1e7  1e8  1e9  1e10    public static double Truncate this double x  int precision        if  precision  lt  0          throw new ArgumentException        if  precision    0          return Math Truncate x       double m   precision  gt   pow10 Length   Math Pow 10  precision    pow10 precision       return Math Truncate x   m    m

User · Answer

Try this   decimal original   GetSomeDecimal       22222 22939393 int number1    int original     contains only integer value of origina number decimal temporary   original - number1     contains only decimal value of original number int decimalPlaces   GetDecimalPlaces       3 temporary     Math Pow 10  decimalPlaces       moves some decimal places to integer temporary    int temporary     removes all decimal places temporary     Math Pow 10  decimalPlaces       moves integer back to decimal places decimal result   original   temporary     add integer and decimal places together   It can be writen shorter  but this is more descriptive   EDIT  Short way   decimal original   GetSomeDecimal       22222 22939393 int decimalPlaces   GetDecimalPlaces       3 decimal result     int original       int  original   Math Pow 10  decimalPlaces      Math Pow 10  decimalPlaces

User · Answer

This is similar to TcKs suggestion above  but using math truncate rather than int conversions  VB  but you ll get the idea  Private Function TruncateToDecimalPlace byval ToTruncate as decimal  byval DecimalPlaces as integer  as double  dim power as decimal   Math Pow 10  decimalplaces  return math truncate totruncate   power    power end function

User · Answer

Try this   double d   2 22912312515  int demention   3  double truncate   Math Truncate d    Math Truncate  d - Math Truncate d     Math Pow 10 0  demention     Math Pow 10 0  demention

User · Answer

You can use Math Round   decimal rounded   Math Round 2 22939393  3     Returns 2 229   Or you can use ToString with the N3 numeric format   string roundedNumber   number ToString  N3      EDIT  Since you don t want rounding  you can easily use Math Truncate   Math Truncate 2 22977777   1000    1000    Returns 2 229

User · Answer

You can use Math Round   decimal rounded   Math Round 2 22939393  3     Returns 2 229   Or you can use ToString with the N3 numeric format   string roundedNumber   number ToString  N3      EDIT  Since you don t want rounding  you can easily use Math Truncate   Math Truncate 2 22977777   1000    1000    Returns 2 229

User · Answer

Try this   decimal original   GetSomeDecimal       22222 22939393 int number1    int original     contains only integer value of origina number decimal temporary   original - number1     contains only decimal value of original number int decimalPlaces   GetDecimalPlaces       3 temporary     Math Pow 10  decimalPlaces       moves some decimal places to integer temporary    int temporary     removes all decimal places temporary     Math Pow 10  decimalPlaces       moves integer back to decimal places decimal result   original   temporary     add integer and decimal places together   It can be writen shorter  but this is more descriptive   EDIT  Short way   decimal original   GetSomeDecimal       22222 22939393 int decimalPlaces   GetDecimalPlaces       3 decimal result     int original       int  original   Math Pow 10  decimalPlaces      Math Pow 10  decimalPlaces

User · Answer

What format are you wanting the output   If you re happy with a string then consider the following C  code   double num   3 12345  num ToString  G3      The result will be  3 12    This link might be of use if you re using  NET  http   msdn microsoft com en-us library dwhawy9k aspx  I hope that helps    but unless you identify than language you are using and the format in which you want the output it is difficult to suggest an appropriate solution

User · Answer

Maybe another quick solution could be    gt  gt  gt  float    1f    1 00001  1 0  gt  gt  gt  float    3f    1 23001  1 23  gt  gt  gt  float    5f    1 23001  1 23001

[.net] Truncate Decimal number not Round Off

Examples related to .net

Examples related to floating-point

Examples related to truncate