Floating point does not always represent some numbers precisely
0.5 and 0.25 are simple binary fractions of 1, floating point will represent it perfectly as long as it has 2+ bits of fraction. For 32-bit floats, anything inside +/-2 million will work perfectly.
Computationally speaking, this is the most direct method: Multiply by 4, strip off decimals, divide by 4.
Last edited by Corona688; 09-26-2014 at 03:04 PM..
Hi All,
How we can handle decimals in (Float) in UNIX.
a=73
b=5
c=`expr a / b`
i am getting 14 but i need full 14.6 .
Can any one help me pls? (1 Reply)
I need to get 15% of the variable exer1 to be added to other exercises
so far, i've got
exer1=$1
aver=`expr $exer \* .15`
but i keep getting an error that an integer value was expected. Is there anyway around this? (1 Reply)
Hi,
I am trying to find if there is a way to convert regular decimal values to Paced decimal values. I tried to find a c program but I could get a Packed converted to regular decimal not the other way round.
If not unix please let me know if any other progrimming language I can use to do... (2 Replies)
Hello,
I want to run a loop with non-integer values (which I know I can't) so I've created a loop of integers and divided it by 10. However, these values are always rounded down to 1 significant figure. How do I get the script to keep and use the decimal value?
My script is as follows
#... (1 Reply)
Hello...
I am new to unix and I am wondering if in a C-shell script , Are we supposed to use only whole numbers........ for example..if a program needs to calculate the average of some numbers........
@ avg = (($1 +$2 + $3)/3)) is returning a whole number.........How can a decimal be achieved... (1 Reply)
Hi I have a large file in which I need to search for certain whole numbers and print the whole line. I'm currently trying this via command line using grep but grep is also matching the decimal values and i just want to return the matching whole numbers (the entire line)
Example
File
ddggg ... (7 Replies)
Hi All,
I would like to do the following in the shell script
561.76 to 562
I tried using this echo 'scale=0; 749 * 75 /100 ' | bc
but just returned only 561
Please help me . I appreciate your help
Thanks
rajeevm (13 Replies)
I am trying to get date to display decimal
Desired output 1350386096256.12
I know this can be done with printf, but are not able to make it work.
I have tested this and many otherprintf "%.2f" $(($(date +%s%N)/1000000)) (8 Replies)
Hello,
i'm new in python. Consider that i have this function that read me some data from a serial :
def GetData():
line = open(serialx).read()
hash = line.find("#")
when = line
count = line
# print when, count, line
return (float(when), int(count))
it gives me the result... (2 Replies)
Hi Gurus,
I have below sample file, I need find the line which 2rd field has more than 2 decimals.
in sample file, I need to find xyz, 123456.789
abc, 1234.45, def
xyz, 123456.789, xxx
bce, 1234.34, xxx
thanks in advance (13 Replies)
Discussion started by: ken6503
13 Replies
LEARN ABOUT OSF1
trunc
floor(3) Library Functions Manual floor(3)NAME
floor, ceil, modf, nint, rint, trunc - Round floating-point numbers to floating-point integers, return the nearest integral value, and
truncate a floating-point number
LIBRARY
Math Library (libm.a)
SYNOPSIS
#include <math.h>
double floor (double x);
float floorf (float x);
long double floorl (long double x);
double ceil (double x);
float ceilf (float x);
long double ceill (long double x);
double modf (double x, double *n);
float modff (float x, float *n);
long double modfl (long double x, long double *n);
double nint (double x);
float nintf (float x);
long double nintl (long double x);
double rint (double x);
float rintf (float x);
long double rintl (long double x);
double trunc (double x);
float truncf (float x);
long double truncl (long double x);
STANDARDS
Interfaces documented on this reference page conform to industry standards as follows:
floor(): XPG4
ceil(): XPG4
modf(): XPG4
rint(): XPG4-UNIX
Refer to the standards(5) reference page for more information about industry standards and associated tags.
DESCRIPTION
The floor(), floorf(), and floorl() functions return the largest floating-point integer value less than or equal to x.
The ceil(), ceilf(), and ceill() functions return the smallest floating-point integer value greater than or equal to x.
The modf(), modff(), and modfl() functions split a floating-point number x into a fractional part f and an integer part i such that |f| <
1.0 and (f + i) = x. Both f and i have the same sign as x. The modf(), modff(), and modfl() functions return f and store i into the loca-
tion pointed to by n.
The nint(), nintf(), and nintl() functions return the nearest integral value to x, except halfway cases are rounded to the integral value
larger in magnitude. This corresponds to the FORTRAN generic intrinsic function nint().
The rint(), rintf(), and rintl() functions round x to an integral value according to the current IEEE rounding direction specified by the
user.
The trunc(), truncf(), and truncl() functions truncate x to an integral value. delim off
floor(3)