Hi guys...
I am working on limited basic set of maths routines for ksh93 that can be sourced as . ./ksh_math.sh and I am gobsmacked by its capabilities.
Although some big guns may already know this, I didn't, and ksh93 is easily able to do floating point numbers to floating point powers and floating point roots.
WWOOWW!!
It is so simple to get the floating point NTH root of a floating point number, within limits of ksh93's floating point precision and rounding capabilities.
I started it earlier today and this is how far I have gotten:
Results so far on OSX 10.13.6, default bash terminal calling ksh from the script:
Will be working on basic TRIG functions next.
Enjoy...
Hi all!
Hi all!
I am working with a problem to find the smallest floating point number that can be represented.
I am going in a loop ,stating with an initial value of 1.0 and then diving it by 10 each time thru the loop.
So the first time I am getting o.1 which I wanted.But from the next... (4 Replies)
Hello,
i have some variables say:
x=1.4
y=3.7
I wish to round off these values to :
x = 2 (after rounding off)
y = 4 (after rounding off)
I am stuck.
Please help. (7 Replies)
Hi,
I am compiling "HelloWorld" C progam on 32-bit CentOS and i want to execute it on 64-bit CentOS architecture.
For that i copied the a.out file from 32-bit to 64-bit machine, but while executing a.out file on 64bit machine I am getting "Floating point exception error".
But we can run... (3 Replies)
Hi,
Could any one tell me how to compare to floating point no. using test command. As -eq option works on only intergers.
i=5.4
if
then
echo "equal"
else
echo "not equal"
fi
here output will be equal even though no. are unequal.
Thanks,
ravi (1 Reply)
is it not possible to simply di aritmetic without using bc or awk
i have tried folllowing operatrions but they support only integer types plz suggest me code for floating using values stored in the variables.the ans i get is integer and if i input floating values i get error numeric constant... (6 Replies)
Anyone help me i cant found the error of floating point
if needed, i added the code complete
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
typedef struct
{
int hh;
int mm;
int ss;
char nom;
int punt;
}cancion;
typedef struct... (9 Replies)
I am writing a script in zsh shell, it fetchs a number from a file using the awk command, store it as a variable, which in my case is a small number 0.62000. I want to change this number by multiplying it by 1000 to become 620.0 using the command in the script
var2=$((var1*1000))
trouble is... (2 Replies)
Hi,
I wish to compare the CPU LOAD 1 min with 5mins and 15mins.
If 1 min's CPU LOAd spike 3% compare to 5 mins or 15 mins CPU Load, it is warning.
If 1 min's CPU LOAd spike 5% compare to 5 mins or 15 mins CPU Load, it is critical.
However I received following code error, I google it and... (10 Replies)
Discussion started by: alvintiow
10 Replies
LEARN ABOUT OSF1
read_rnd
write_rnd(3) Library Functions Manual write_rnd(3)NAME
write_rnd, read_rnd - Sets and returns IEEE dynamic rounding mode for floating-point operations
LIBRARY
Standard C Library (libc.so, libc.a)
SYNOPSIS
#include <float.h>
unsigned int write_rnd(
unsigned int rnd);
unsigned int read_rnd();
DESCRIPTION
The write_rnd function sets the dynamic rounding mode in the floating-point control register (fpcr) for IEEE floating-point operations and
returns the previous dynamic rounding mode. Dynamic rounding mode for IEEE floating-point operations is enabled for code generated by the
C compiler by specifying -fprm d to cc(1), and by using the d floating-point instruction operator in assembly language code.
Specify rnd as one of the following constants defined in float.h
---------------------------------------------------
Constant Meaning
---------------------------------------------------
FP_RND_RZ Round toward zero (chopped rounding)
FP_RND_RN Round toward nearest (normal rounding)
FP_RND_RP Round toward plus infinity
FP_RND_RM Round toward minus infinity
---------------------------------------------------
The read_rnd function returns the current dynamic rounding mode for floating-point operations.
RETURN VALUES
The write_rnd function returns the previous IEEE floating-point rounding mode. The read_rnd function returns the current IEEE floating-
point rounding mode.
RELATED INFORMATION
Commands: cc(1).
Files: float.h.
Assembly Language Programmer's Guide.
Alpha Architecture Reference Manual.
IEEE Standard for Binary Floating-Point Arithmetic delim off
write_rnd(3)