The problem seems not to be in "bc", but in "dc". I executed your command (which seems to be correct IMHO) with the "-c" switch (compile only) to bc and it gave me:
This command list seems to be correct.
When executing this inside dc i got the same erroneous result as you (AIX 5.3 here), but when i changed the output base to "2" i got "10001", which is correct. Also, when i use "8" as output base it gave me the corect result "21". I conclude that "dc" has some systematic error.
Edit: didn't see radoulovs hint - i didn't know that. *blushes*
Hi,
please tell me how to convert hex number to decimal
000000E7
000000000002640D
0000000000025B16
and seconds to minutes, hours, days, months, years
bytes to kbytes, mbytes , gbytes
read the following examples
while read a b
do
printf "%5d %5d\n" "0x$a" "0x$b"
done < "$FILE"... (15 Replies)
Hi I want to incremental add hex decimal number to a particula field in file
eg: addr =123 dept1=0
addr = 345 dept2 =1
addr2 = 124 dept3 =2
.
.
.
.
.
.
addr3 =567 dept15 =f
Is there any command which add... (8 Replies)
Please Help Me! about the problem down under.
I have 2 files with nearly the same characteristics, I have to convert one to the other format or the other format to one's format. I want to write it with awk.
The first file contain lines like this:
300000001#A#Y#Y#Y#Y
The other file contain... (4 Replies)
Dear All PROs
Thanks in advance
need a shell for Decimal to hex conversion
input file (decimal values)
65,5,48,66,133,131,118,47
65,5,48,66,133,131,83,63
.
.
desire output should be (Hex value)... (11 Replies)
I am writing a bash script to do some parsing on a log and I am running into a problem when it comes to converting only certain sections of the file from hex to ascii or hex to decimal.
Data Example:
The hex values after Hardware and SW Version I need to convert from Hex to ASCII and the... (16 Replies)
I have 32 bit value in hex that I want to separate into fields and then convert the fields into decimal values.
Input file has 2 words of 32 bit hex values:
000001ac
ca85210e
Output both words separated into individual bit fields:
ca85210e: f1(31:9), f2(8:0)
f7c392ac: f1(31:14),... (2 Replies)
can someone help me in converting hex streams to decimal values using perl script
Hex value:
$my_hex_stream="0c07ac14001676";
Every hex value in the above stream should be converted in to decimal and separated by comma.
The output should be: 12,07,172,20,00,22,118 (2 Replies)
The file contains code like the below and need to convert each one into a decimal
00 00 00 04 17 03 06 01
So the output should come as
0 0 0 4 23 3 6 1 (24 Replies)
How to convert decimal value to hex and than take 1st digits as variable
sample data
84844294,5,6
51291736,2,3
84844294,5,6
51291736,2,3
i can use {printf "%x,%d\n",$1,$2} but than i want to filter base on 1st hex digit 1st recrd (1 Reply)
Discussion started by: before4
1 Replies
LEARN ABOUT PLAN9
bc
BC(1) General Commands Manual BC(1)NAME
bc - arbitrary-precision arithmetic language
SYNOPSIS
bc [ -c ] [ -l ] [ file ... ]
DESCRIPTION
Bc is an interactive processor for a language that resembles C but provides arithmetic on numbers of arbitrary length with up to 100 digits
right of the decimal point. It takes input from any files given, then reads the standard input. The -l argument stands for the name of an
arbitrary precision math library. The following syntax for bc programs is like that of C; L means letter a-z, E means expression, S means
statement.
Lexical
comments are enclosed in /* */
newlines end statements
Names
simple variables: L
array elements: L[E]
The words ibase, obase, and scale
Other operands
arbitrarily long numbers with optional sign and decimal point.
(E)
sqrt(E)
length(E)
number of significant decimal digits
scale(E)
number of digits right of decimal point
L(E,...,E)
function call
Operators
+ - * / % ^ (% is remainder; ^ is power)
++ --
== <= >= != < >
= += -= *= /= %= ^=
Statements
E
{ S ; ... ; S }
print E
if ( E ) S
while ( E ) S
for ( E ; E ; E ) S
null statement
break
quit
"text"
Function definitions
define L ( L , ... , L ){
auto L , ... , L
S ; ... ; S
return E
}
Functions in
-l math library
s(x) sine
c(x) cosine
e(x) exponential
l(x) log
a(x) arctangent
j(n, x)
Bessel function
All function arguments are passed by value.
The value of an expression at the top level is printed unless the main operator is an assignment. Text in quotes, which may include new-
lines, is also printed. Either semicolons or newlines may separate statements. Assignment to scale influences the number of digits to be
retained on arithmetic operations in the manner of dc(1). Assignments to ibase or obase set the input and output number radix respec-
tively.
The same letter may be used as an array, a function, and a simple variable simultaneously. All variables are global to the program. Auto-
matic variables are pushed down during function calls. In a declaration of an array as a function argument or automatic variable empty
square brackets must follow the array name.
Bc is actually a preprocessor for dc(1), which it invokes automatically, unless the -c (compile only) option is present. In this case the
dc input is sent to the standard output instead.
EXAMPLE
Define a function to compute an approximate value of the exponential. Use it to print 10 values. (The exponential function in the library
gives better answers.)
scale = 20
define e(x) {
auto a, b, c, i, s
a = 1
b = 1
s = 1
for(i=1; 1; i++) {
a *= x
b *= i
c = a/b
if(c == 0) return s
s += c
}
}
for(i=1; i<=10; i++) print e(i)
FILES
/sys/lib/bclib mathematical library
SOURCE
/sys/src/cmd/bc.y
SEE ALSO dc(1), hoc(1)BUGS
No or operators.
A statement must have all three
A is interpreted when read, not when executed.
BC(1)