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Top Forums Shell Programming and Scripting A better way to compare text length percentage? Post 303046101 by bedtime on Thursday 23rd of April 2020 07:52:48 PM
Old 04-23-2020
Thank you all for you solutions. I ended up going with vegersh99's solution as it was the most brief. I liked RudiC's mathmatics with the inverse equation.

Since I cannot have 'division by zero' errors, I added the 'if' statement near the end. Found out that shell doesn't like to compare numbers with decimals so added the int() function as well:

echo ${#text1} ${#text2} | awk '{a=b=$1;($1>$2)?a=$2:b=$2;if(a*b){print int(100/a*b)}}'

Would really like to figure out how to get this to do the equation so as not to have the 'division by zero' error when one or two variables have an empty string. I've tried a bunch of things such as adding '1' to each variable and trying to make it up elsewhere, but each time the values are incorrect.

Anyways, for now, it's more concise, and it's being used in the code.

Thanks everyone!

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mlib_ImageDivAlpha_Inp(3MLIB)				    mediaLib Library Functions				     mlib_ImageDivAlpha_Inp(3MLIB)

mlib_ImageDivAlpha_Inp - alpha channel division, in place SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_ImageDivAlpha_Inp(mlib_image *srcdst, mlib_s32 cmask); DESCRIPTION
The mlib_ImageDivAlpha_Inp() function divides color channels by the alpha channel on a pixel-by-pixel basis, in place. For the MLIB_BYTE image, it uses the following equation: srcdst[x][y][c] = srcdst[x][y][c] / (srcdst[x][y][a] * 2**(-8)) For the MLIB_SHORT image, it uses the following equation: srcdst[x][y][c] = srcdst[x][y][c] / (srcdst[x][y][a] * 2**(-15)) For the MLIB_USHORT image, it uses the following equation: srcdst[x][y][c] = srcdst[x][y][c] / (srcdst[x][y][a] * 2**(-16)) For the MLIB_INT image, it uses the following equation: srcdst[x][y][c] = srcdst[x][y][c] / (srcdst[x][y][a] * 2**(-31)) where c and a are the indices for the color channels and the alpha channel, respectively, so c != a. In the case of srcdst[x][y][a] = 0, srcdst[x][y][c] = 0 if srcdst[x][y][c] = 0 srcdst[x][y][c] = DATA_TYPE_MAX if srcdst[x][y][c] > 0 srcdst[x][y][c] = DATA_TYPE_MIN if srcdst[x][y][c] < 0 where DATA_TYPE is MLIB_U8, MLIB_S16, MLIB_U16, or MLIB_S32 for an image of type MLIB_BYTE, MLIB_SHORT, MLIB_USHORT, or MLIB_INT, respec- tively. PARAMETERS
The function takes the following arguments: srcdst Pointer to source and destination image. cmask Channel mask to indicate the alpha channel. Each bit of the mask represents a channel in the image. The channel corresponding to the 1 bit of cmask is the alpha channel. RETURN VALUES
The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Committed | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mlib_ImageDivAlpha(3MLIB), mlib_ImageDivAlpha_Fp(3MLIB), mlib_ImageDivAlpha_Fp_Inp(3MLIB), attributes(5) SunOS 5.11 2 Mar 2007 mlib_ImageDivAlpha_Inp(3MLIB)

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