I need a bit of help, usually for bulk replacement of a word in a bunch of files I do something like this

but i need to be able to put a conditional || on the search without clobbering, I'm updating old C files to C11 type generic. there are a lot of type specific qualifiers that i want to replace with generic

http://en.cppreference.com/w/c/numeric/tgmath

generic   float  dbl       long      cfloat     c dbl      cmplx long
atanh    atanhf    atanh    atanhl    catanhf    catanh    catanhl
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so in general i need to check for suffixes and prefixes at the same time otherwise the search term will clobber the previous search.

perl -pi -e 's/c$tgt || c$tgtf || c$tgtl || $tgtf || $tgtl /$tgt/g' *.
+c
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where $tgt is the replacement string, for example

$tgt = tanh
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i need to search and replace the following

but i get a complete mess out as the command still recurses and substitutes.

as well as the tricky one to replace 'rint' as it will conflict with printf

these old files have no spaces between operators but i'll space it out

exa=cexpl ( ccosl (arg), csinl ( arg) ) * cabsl (arg2) + csqrtl ( carg
+l(arg3) + csqrtl(cargl(arg4) * cargl(arg5) + cargl (arg5) * cargl(arg
+5));
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exa = exp( cos(arg) , sin(arg) ) * fabs(arg2)+ sqrt(carg(arg3) + sqrt(
+carg(arg4)*carg(arg5)+carg(arg5)*carg(arg5));
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