Reorganisation of the source tree

Most of the other users of the fptools build system have migrated to
Cabal, and with the move to darcs we can now flatten the source tree
without losing history, so here goes.

The main change is that the ghc/ subdir is gone, and most of what it
contained is now at the top level.  The build system now makes no
pretense at being multi-project, it is just the GHC build system.

No doubt this will break many things, and there will be a period of
instability while we fix the dependencies.  A straightforward build
should work, but I haven't yet fixed binary/source distributions.
Changes to the Building Guide will follow, too.

1 files changed, 165 insertions, 0 deletions

diff --git a/utils/hp2ps/Curves.c b/utils/hp2ps/Curves.c
new file mode 100644
index 0000000000..ec05c98336
--- /dev/null
+++ b/utils/hp2ps/Curves.c
@@ -0,0 +1,165 @@
+#include "Main.h"
+#include <stdio.h>
+#include <math.h>
+#include "Defines.h"
+#include "Dimensions.h"
+#include "HpFile.h"
+#include "Shade.h"
+#include "Utilities.h"
+
+/* own stuff */
+#include "Curves.h"
+
+static floatish *x;		/* x and y values  */
+static floatish *y;
+
+static floatish *py;		/* previous y values */
+
+static void Curve PROTO((struct entry *));	/* forward */
+static void ShadeCurve
+    PROTO((floatish *x, floatish *y, floatish *py, floatish shade));
+
+void
+Curves()
+{
+    intish i;
+
+    for (i = 0; i < nidents; i++) {
+        Curve(identtable[i]);
+    }
+}
+
+/*
+ *      Draw a curve, and fill the area that is below it and above 
+ *	the previous curve.
+ */
+
+static void
+Curve(e)
+  struct entry* e;
+{
+    struct chunk* ch;
+    int j;
+  
+    for (ch = e->chk; ch; ch = ch->next) {
+        for (j = 0; j < ch->nd; j++) {
+	    y[ ch->d[j].bucket ] += ch->d[j].value;
+	}
+    }    
+
+    ShadeCurve(x, y, py, ShadeOf(e->name));
+}
+
+
+static void PlotCurveLeftToRight PROTO((floatish *, floatish *)); /* forward */
+static void PlotCurveRightToLeft PROTO((floatish *, floatish *)); /* forward */
+
+static void SaveCurve PROTO((floatish *, floatish *)); /* forward */
+
+/*
+ *	Map virtual x coord to physical x coord 
+ */
+ 
+floatish
+xpage(x)
+  floatish x;
+{
+    return (x + graphx0); 
+}
+
+
+
+/*
+ *	Map virtual y coord to physical y coord 
+ */
+ 
+floatish
+ypage(y)
+  floatish y;
+{
+    return (y + graphy0); 
+}
+
+
+/*
+ *	Fill the region bounded by two splines, using the given 
+ *	shade.
+ */
+
+static void
+ShadeCurve(x, y, py, shade)
+  floatish *x; floatish *y; floatish *py; floatish shade;
+{
+    fprintf(psfp, "%f %f moveto\n", xpage(x[0]), ypage(py[0]));
+    PlotCurveLeftToRight(x, py);
+
+    fprintf(psfp, "%f %f lineto\n", xpage(x[nsamples - 1]), 
+                                    ypage(y[nsamples - 1]));
+    PlotCurveRightToLeft(x, y);
+
+    fprintf(psfp, "closepath\n");
+
+    fprintf(psfp, "gsave\n");
+
+    SetPSColour(shade);
+    fprintf(psfp, "fill\n");
+
+    fprintf(psfp, "grestore\n");
+    fprintf(psfp, "stroke\n");
+
+    SaveCurve(y, py);
+}
+
+static void
+PlotCurveLeftToRight(x,y)
+  floatish *x; floatish *y;
+{
+    intish i;
+
+    for (i = 0; i < nsamples; i++) {
+        fprintf(psfp, "%f %f lineto\n", xpage(x[i]), ypage(y[i]));
+    }
+}
+
+static void
+PlotCurveRightToLeft(x,y)
+  floatish *x; floatish *y;
+{
+    intish i;
+
+    for (i = nsamples - 1; i >= 0; i-- ) {
+        fprintf(psfp, "%f %f lineto\n", xpage(x[i]), ypage(y[i]));
+    }
+}
+
+/*
+ *	Save the curve coordinates stored in y[] in py[].
+ */
+
+static void
+SaveCurve(y, py)
+  floatish *y; floatish* py;
+{
+    intish i;
+
+    for (i = 0; i < nsamples; i++) {
+	py[i] = y[i];
+    }
+}
+
+extern floatish xrange;
+
+void
+CurvesInit()
+{
+    intish i;
+
+    x  =  (floatish*) xmalloc(nsamples * sizeof(floatish));
+    y  =  (floatish*) xmalloc(nsamples * sizeof(floatish));
+    py =  (floatish*) xmalloc(nsamples * sizeof(floatish));
+
+    for (i = 0; i < nsamples; i++) {
+        x[i] = ((samplemap[i] - samplemap[0])/ xrange) * graphwidth;
+        y[i] = py[i] = 0.0; 
+    }
+}