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Full Discussion: Round up the decimals
Top Forums Shell Programming and Scripting Round up the decimals Post 302705969 by Corona688 on Tuesday 25th of September 2012 10:30:54 PM
Old 09-25-2012
bc is still an integer calculator, it just tracks the decimal point and adjusts later.

You can round up the same way in bc the same way you would in pure integer math. Add 0.5 (times 100) before you divide. Numbers that would round up will bump past nine, numbers that round down won't.

Code:
echo $((((749 * 75)+50) /100))

 

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round(3M)						  Mathematical Library Functions						 round(3M)

NAME
round, roundf, roundl - round to nearest integer value in floating-point format SYNOPSIS
cc [ flag... ] file... -lm [ library... ] #include <math.h> double round(double x); float roundf(float x); long double roundl(long double x); DESCRIPTION
These functions round their argument to the nearest integer value in floating-point format, rounding halfway cases away from 0, regardless of the current rounding direction. RETURN VALUES
Upon successful completion, these functions return the rounded integer value. If x is NaN, a NaN is returned. If x is +-0 or +- Inf, x is returned. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
feclearexcept(3M), fetestexcept(3M), math.h(3HEAD), attributes(5), standards(5) SunOS 5.10 1 Nov 2003 round(3M)
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