CastXML/share/castxml/clang/include/__clang_cuda_complex_builtins.h [39:80]:
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  __real__(z) = __ac - __bd;
  __imag__(z) = __ad + __bc;
  if (std::isnan(__real__(z)) && std::isnan(__imag__(z))) {
    int __recalc = 0;
    if (std::isinf(__a) || std::isinf(__b)) {
      __a = std::copysign(std::isinf(__a) ? 1 : 0, __a);
      __b = std::copysign(std::isinf(__b) ? 1 : 0, __b);
      if (std::isnan(__c))
        __c = std::copysign(0, __c);
      if (std::isnan(__d))
        __d = std::copysign(0, __d);
      __recalc = 1;
    }
    if (std::isinf(__c) || std::isinf(__d)) {
      __c = std::copysign(std::isinf(__c) ? 1 : 0, __c);
      __d = std::copysign(std::isinf(__d) ? 1 : 0, __d);
      if (std::isnan(__a))
        __a = std::copysign(0, __a);
      if (std::isnan(__b))
        __b = std::copysign(0, __b);
      __recalc = 1;
    }
    if (!__recalc && (std::isinf(__ac) || std::isinf(__bd) ||
                      std::isinf(__ad) || std::isinf(__bc))) {
      if (std::isnan(__a))
        __a = std::copysign(0, __a);
      if (std::isnan(__b))
        __b = std::copysign(0, __b);
      if (std::isnan(__c))
        __c = std::copysign(0, __c);
      if (std::isnan(__d))
        __d = std::copysign(0, __d);
      __recalc = 1;
    }
    if (__recalc) {
      // Can't use std::numeric_limits<double>::infinity() -- that doesn't have
      // a device overload (and isn't constexpr before C++11, naturally).
      __real__(z) = __builtin_huge_valf() * (__a * __c - __b * __d);
      __imag__(z) = __builtin_huge_valf() * (__a * __d + __b * __c);
    }
  }
  return z;
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CastXML/share/castxml/clang/include/__clang_cuda_complex_builtins.h [90:129]:
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  __real__(z) = __ac - __bd;
  __imag__(z) = __ad + __bc;
  if (std::isnan(__real__(z)) && std::isnan(__imag__(z))) {
    int __recalc = 0;
    if (std::isinf(__a) || std::isinf(__b)) {
      __a = std::copysign(std::isinf(__a) ? 1 : 0, __a);
      __b = std::copysign(std::isinf(__b) ? 1 : 0, __b);
      if (std::isnan(__c))
        __c = std::copysign(0, __c);
      if (std::isnan(__d))
        __d = std::copysign(0, __d);
      __recalc = 1;
    }
    if (std::isinf(__c) || std::isinf(__d)) {
      __c = std::copysign(std::isinf(__c) ? 1 : 0, __c);
      __d = std::copysign(std::isinf(__d) ? 1 : 0, __d);
      if (std::isnan(__a))
        __a = std::copysign(0, __a);
      if (std::isnan(__b))
        __b = std::copysign(0, __b);
      __recalc = 1;
    }
    if (!__recalc && (std::isinf(__ac) || std::isinf(__bd) ||
                      std::isinf(__ad) || std::isinf(__bc))) {
      if (std::isnan(__a))
        __a = std::copysign(0, __a);
      if (std::isnan(__b))
        __b = std::copysign(0, __b);
      if (std::isnan(__c))
        __c = std::copysign(0, __c);
      if (std::isnan(__d))
        __d = std::copysign(0, __d);
      __recalc = 1;
    }
    if (__recalc) {
      __real__(z) = __builtin_huge_valf() * (__a * __c - __b * __d);
      __imag__(z) = __builtin_huge_valf() * (__a * __d + __b * __c);
    }
  }
  return z;
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