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6 cerfcx, erfcx - underflow-compensated complementary error function
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9 #include <cerf.h>
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11 double _Complex cerfcx ( double _Complex z );
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13 double erfcx ( double x );
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16 The function cerfcx is an underflow-compensated variant of the complex
17 error function: erfcx(z) = exp(z^2) erfc(z).
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19 The function erfcx takes a real argument and returns a real result.
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22 The implementation of cerfcx is a thin wrapper around Faddeeva's
23 function w_of_z.
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25 The implementation of erfcx is self-contained, and improves upon the
26 SLATEC DERFC function (or an erfcx function derived therefrom) or
27 Cody's CALERF function (from netlib.org/specfun), while retaining near
28 machine precision in accuracy.
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31 Related complex error functions in liberfc: w_of_z(3), dawson(3),
32 voigt(3), cerf(3), erfi(3).
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34 The real error function comes with recent versions of glibc, as
35 requested by the C99 standard: erf(3)
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37 Homepage: http://apps.jcns.fz-juelich.de/libcerf
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40 Steven G. Johnson, http://math.mit.edu/~stevenj,
41 Massachusetts Institute of Technology,
42 researched the numerics, and implemented the Faddeeva function.
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44 Joachim Wuttke <j.wuttke@fz-juelich.de>, Forschungszentrum Juelich,
45 reorganized the code into a library, and wrote this man page.
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47 Please report bugs to the authors.
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50 Copyright (c) 2012 Massachusetts Institute of Technology
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52 Copyright (c) 2013 Forschungszentrum Juelich GmbH
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54 Software: MIT License.
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56 This documentation: Creative Commons Attribution Share Alike.
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60perl v5.38.0 builddi2r0:2:3b-u0i7l-d2:0:BUILD::libcerf-v2.3::man::erfcx(3)