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Full Discussion: Perl:: mass replacement of converting C code formats to tgmath.h
Top Forums Shell Programming and Scripting Perl:: mass replacement of converting C code formats to tgmath.h Post 302967610 by f77hack on Thursday 25th of February 2016 04:36:07 PM
Old 02-25-2016
Perl:: mass replacement of converting C code formats to tgmath.h
hello,

i have a lot of C old code I'm updating to C11 with tgmath.h for generic math. the old code has very specific types, real and complex, like cabsl, csinhl, etc

usually for simple bulk replacements i would do something simple like this

perl -pi -e 's/cosl/cos/g' *.c

the reference is here
HTML Code:
http://en.cppreference.com/w/c/numeric/tgmath
snippet

real complex
generic float long dble dble dble float long dble dble dble
fabs fabsf fabs fabsl cabsf cabs cabsl
exp expf exp expl cexpf cexp cexpl
log logf log logl clogf clog clogl


there are basically two classes of operations

Code:
array=(fabs exp log pow sqrt sin cos tan acos atan sinh cosh tanh asinh acosh atanh)
for tgt in array
{
perl -pi -e 's/${tgt}f/${tgt}/g' *.*
perl -pi -e 's/${tgt}l/${tgt}/g' *.*
perl -pi -e 's/c${tgt}/${tgt}/g' *.*
perl -pi -e 's/c${tgt}f/${tgt}/g' *.*
perl -pi -e 's/c${tgt}l/${tgt}/g' *.*
}
#special case of fabs
perl -pi -e 's/cabs/${tgt}/g' *.*

and

Code:
array=(atan2 cbrt ceil copysign erf erfc exp2 expm1 fdim floor fma fmax fmin fmod)
array+=(frexp hypot ilogb ldexp lgamma llrint llround log10 log1p log2 logb lrint)
array+=(lround nearbyint nextafter nexttoward remainder remquo rint roiund scalbin)
array+=(scalbn tgamma trunc carg conj creal cimag cproj)
for tgt in array
{
perl -pi -e 's/${tgt}f/${tgt}/g' *.*
perl -pi -e 's/${tgt}l/${tgt}/g' *.
}

perl is not mandatory, but a sweet one or two liner would be excellent.


thanks.

---------- Post updated at 04:36 PM ---------- Previous update was at 02:55 PM ----------

oh well, i went ahead my own my loops and forked.
Last edited by f77hack; 02-25-2016 at 04:30 PM.. Reason: typo
 

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LEARN ABOUT FREEBSD

tgmath

TGMATH(3)						   BSD Library Functions Manual 						 TGMATH(3)

NAME

     tgmath -- type-generic macros

SYNOPSIS

     #include <tgmath.h>

DESCRIPTION

     The header <tgmath.h> provides type-generic macros for <math.h> and <complex.h> functions that have float (suffixed with f), double and long
     double (suffixed with l) versions.  The arguments that vary across the three functions and have type float, double and long double, respec-
     tively, are called generic arguments.

     The following rules describe which function is actually called if a type-generic macro is invoked.  If any generic argument has type long
     double or long double complex, the long double function is called.  Else, if any generic argument has type double, double complex or an inte-
     ger type, the double version is invoked.  Otherwise, the macro expands to the float implementation.

     For the macros in the following table, both real and complex functions exist.  The real functions are prototyped in <math.h> and the complex
     equivalents in <complex.h>.  The complex function is called if any of the generic arguments is a complex value.  Otherwise, the real equiva-
     lent is called.

	   Macro      real function	  complex function
	   acos()     acos()		  cacos()
	   asin()     asin()		  casin()
	   atan()     atan()		  catan()
	   acosh()    acosh()		  cacosh()
	   asinh()    asinh()		  casinh()
	   atanh()    atanh()		  catanh()
	   cos()      cos()		  ccos()
	   sin()      sin()		  csin()
	   tan()      tan()		  ctan()
	   cosh()     cosh()		  ccosh()
	   sinh()     sinh()		  csinh()
	   tanh()     tanh()		  ctanh()
	   exp()      exp()		  cexp()
	   log()      log()		  clog()
	   pow()      pow()		  cpow()
	   sqrt()     sqrt()		  csqrt()
	   fabs()     fabs()		  cabs()

     No complex functions exist for the following macros, so passing a complex value to a generic argument invokes undefined behaviour:

	   atan2()	   fma()	   llround()	   remainder()
	   cbrt()	   fmax()	   log10()	   remquo()
	   ceil()	   fmin()	   log1p()	   rint()
	   copysign()	   fmod()	   log2()	   round()
	   erf()	   frexp()	   logb()	   scalbn()
	   erfc()	   hypot()	   lrint()	   scalbln()
	   exp2()	   ilogb()	   lround()	   tgamma()
	   expm1()	   ldexp()	   nearbyint()	   trunc()
	   fdim()	   lgamma()	   nextafter()
	   floor()	   llrint()	   nexttoward()

     The following macros always expand to a complex function:

	   carg()    cimag()   conj()	 cproj()   creal()

     This header includes <complex.h> and <math.h>.

STANDARDS

     The header <tgmath.h> conforms to ISO/IEC 9899:1999 (``ISO C99'').

HISTORY

     The header <tgmath.h> first appeared in FreeBSD 5.3.

COMPILER SUPPORT

     Before ISO/IEC 9899:2011 (``ISO C11''), the header <tgmath.h> could not be implemented with strictly conforming C code and needed special
     compiler support.	As of ISO/IEC 9899:2011 (``ISO C11''), this header file can be implemented using the _Generic() language keyword.  In
     addition to compilers that support this keyword, this header file works with GCC.

BUGS

     Many of the functions mentioned here are not prototyped in <math.h> or <complex.h> as they are not yet implemented.  This prevents the corre-
     sponding type-generic macro from working at all.

BSD
								  January 4, 2012							       BSD
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