sdcc-3.9.0 fork implementing GNU assembler syntax

This fork aims to provide better support for stm8-binutils

1 files changed, 157 insertions, 0 deletions

diff --git a/support/regression/tests/float.c b/support/regression/tests/float.c
new file mode 100644
index 0000000..6a7cb68
--- /dev/null
+++ b/support/regression/tests/float.c
@@ -0,0 +1,157 @@
+/* Float tests.
+
+   operation: ADD, SUB, MUL, DIV, REVDIV
+*/
+
+#if 1
+  // we are in the regression tests
+  #include <testfwk.h>
+  #define DEBUG(x)
+
+  #define {operation} 1
+#else
+  // we are standalone
+  #include <stdio.h>
+  #define DEBUG(x) x
+  #define ASSERT(x)
+  #define ADD 1
+  #define SUB 1
+  #define MUL 1
+  #define DIV 1
+  #define REVDIV 1
+#endif
+
+#ifdef __SDCC_mcs51
+#  define STORAGE __xdata
+#  define XDATA __xdata
+#elif __SDCC_pic16
+#  define STORAGE __code
+#  define XDATA
+#else
+#  define STORAGE
+#  define XDATA
+#endif
+
+#if !defined(__SDCC_pdk14) && !defined(__SDCC_pdk15) // Lack of memory
+XDATA volatile float left, right, result;
+
+struct {
+  float left, right, add, sub, mul, div, revdiv;
+} STORAGE cases[]={
+  //     left  right        add        sub          mul         div   revdiv
+  {      12.8,  25.6,      38.4,     -12.8,      327.68,        0.5,  2},
+  {      12.8, -25.6,     -12.8,      38.4,     -327.68,       -0.5, -2},
+  {     -12.8,  25.6,      12.8,     -38.4,     -327.68,       -0.5, -2},
+  {     -12.8, -25.6,     -38.4,      12.8,      327.68,        0.5,  2},
+  {     100.0,  10.0,     110.0,      90.0,     1000.00,       10.0,  0.1},
+  {    1000.0,  10.0,    1010.0,     990.0,    10000.00,      100.0,  0.01},
+  {   10000.0,  10.0,   10010.0,    9990.0,   100000.00,     1000.0,  0.001},
+  {  100000.0,  10.0,  100010.0,   99990.0,  1000000.00,    10000.0,  0.0001},
+  { 1000000.0,  10.0, 1000010.0,  999990.0, 10000000.00,   100000.0,  0.00001},
+  {10000000.0,  10.0,10000010.0, 9999990.0,100000000.00,  1000000.0,  0.000001},
+  {     0x100,  0x10,     0x110,      0xf0,      0x1000,       0x10,  0.0625},
+  {    0x1000,  0x10,    0x1010,     0xff0,     0x10000,      0x100,  0.00390625},
+  {   0x10000,  0x10,   0x10010,    0xfff0,    0x100000,     0x1000,  0.00024414},
+  {  0x100000,  0x10,  0x100010,   0xffff0,   0x1000000,    0x10000,  0 /* ignore */},
+  { 0x1000000,  0x10, 0x1000010,  0xfffff0,  0x10000000,   0x100000,  0 /* ignore */},
+  {0x10000000,  0x10,0x10000010, 0xffffff0, (float)0x10000000*0x10,
+                                                          0x1000000,  0 /* ignore */},
+};
+
+XDATA int tests = 0, errors = 0;
+
+char
+compare (float is, float should)
+{
+  float diff = should ? is / should : 0;
+  tests++;
+  DEBUG (printf (" %1.3f (%f %f) ", is, should, diff));
+
+  if (should == 0)
+    {
+      DEBUG (printf ("IGNORED!\n"));
+      return 0;
+    }
+
+  // skip the fp roundoff errors
+  if (diff > 0.999999 && diff < 1.00001)
+    {
+      DEBUG (printf ("OK!\n"));
+      ASSERT (1);
+      return 0;
+    }
+  else
+    {
+      errors++;
+      DEBUG (printf ("FAIL!\n"));
+      ASSERT (0);
+      return 1;
+    }
+}
+#endif
+
+void
+testFloatMath (void)
+{
+#if !defined(__SDCC_pdk14) && !defined(__SDCC_pdk15) // Lack of memory
+  int i;
+  int t = sizeof (cases) / sizeof (cases[0]);
+  float result;
+
+  for (i = 0; i < t; i++)
+    {
+      DEBUG (printf ("Case %d ", i));
+      #ifdef ADD
+        // add
+        result = cases[i].left + cases[i].right;
+        DEBUG (printf ("%1.3f + %1.3f =", cases[i].left, cases[i].right));
+        compare (result, cases[i].add);
+      #endif
+      #ifdef SUB
+        // sub
+        result = cases[i].left - cases[i].right;
+        DEBUG (printf ("%1.3f - %1.3f =", cases[i].left, cases[i].right));
+        compare (result, cases[i].sub);
+      #endif
+      #ifdef MUL
+        // mul
+        result = cases[i].left * cases[i].right;
+        DEBUG (printf ("%1.3f * %1.3f =", cases[i].left, cases[i].right));
+        compare (result, cases[i].mul);
+      #endif
+      #ifdef DIV
+        // div
+        result = cases[i].left / cases[i].right;
+        DEBUG (printf ("%1.3f / %1.3f =", cases[i].left, cases[i].right));
+        compare (result, cases[i].div);
+      #endif
+      #ifdef REVDIV
+        // revdiv
+        result = cases[i].right / cases[i].left;
+        DEBUG (printf ("%1.3f / %1.3f =", cases[i].right, cases[i].left));
+        compare(result, cases[i].revdiv);
+      #endif
+    }
+  DEBUG (printf ("%d tests, %d errors\n", tests, errors));
+#endif
+}
+
+void
+testFloatMulRound (void)
+{
+#if !defined(__SDCC_pdk14) && !defined(__SDCC_pdk15) // Lack of memory
+    right = 2.0 / 10.61;
+    result = 10.61 * right;
+    compare (result, 2.0);
+#endif
+}
+
+#if 0
+void
+main (void)
+{
+  testFloatMath ();
+  testFloatMulRound ();
+}
+#endif
+