1 files changed, 59 insertions, 0 deletions
diff --git a/fitsy++/outfits.C b/fitsy++/outfits.C
new file mode 100644
index 0000000..b05e098
--- /dev/null
+++ b/fitsy++/outfits.C
@@ -0,0 +1,59 @@
+// Copyright (C) 1999-2018
+// Smithsonian Astrophysical Observatory, Cambridge, MA, USA
+// For conditions of distribution and use, see copyright notice in "copyright"
+
+#include "outfits.h"
+#include "util.h"
+
+OutFitsStream::OutFitsStream()
+{
+  valid_ = 0;
+}
+
+OutFitsStream::~OutFitsStream()
+{
+}
+
+int OutFitsStream::writeSwap(char* where, int size, int bitpix)
+{
+  char* buf = new char[B4KB];
+
+  // size_t size is unsigned
+  long long ss = size;
+  size_t rr =0;
+  int r;
+  do {
+    r = (ss>B4KB) ? B4KB : ss;
+
+    switch (bitpix) {
+    case 8:
+      memcpy(buf, where+rr, r);
+      break;
+    case 16:
+    case -16:
+      for (int ii=0; ii<r; ii+=2)
+	swap2(where+rr+ii,buf+ii);
+      break;
+    case 32:
+    case -32:
+      for (int ii=0; ii<r; ii+=4)
+	swap4(where+rr+ii,buf+ii);
+      break;
+    case 64:
+    case -64:
+      for (int ii=0; ii<r; ii+=8)
+	swap8(where+rr+ii,buf+ii);
+      break;
+    }
+
+    write(buf,r);
+    ss -= r;
+    rr += r;
+  } while (r>0 && rr<size);
+
+  if (buf)
+    delete [] buf;
+
+  return rr;
+}
+