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#if 0 # define TGSOURCE "erf.c" #include "_tgmath.h" #include <math.h> TYPE TGFN(erf)(TYPE x) { switch (fpclassify(x)) { case FP_ZERO: return x; case FP_INFINITE: return signbit(x) ? -1.0 : 1.0; default: break; } return x; } /* STDC(199901) XOPEN(4) LINK(m) */ #endif