work on spo files

[pspp] / dump-float.c

diff --git a/dump-float.c b/dump-float.c
index 84e4115e1915e7e8663241f54640d382c1efb769..21aa391d068cc319a863100348a0b01f9cf53782 100644 (file)
--- a/dump-float.c
+++ b/dump-float.c
@@ -1,15 +1,33 @@
 #include <stdint.h>
 #include <stdio.h>
+#include <string.h>
+
+void
+print_double (const uint8_t *b)
+{
+  double d;
+  memcpy (&d, b, 8);
+  printf ("%f\n", d);
+}
+
+void
+print_float (const uint8_t *b)
+{
+  float d;
+  memcpy (&d, b, 4);
+  printf ("%f\n", d);
+}
 
 int
 main (void)
 {
-  union
-    {
-      uint8_t b[8];
-      double d;
-    }
-  x = { .b = { 0x18, 0x00, 0x00, 0x1c, 0xf0, 0xff, 0xff, 0x5f } };
-  printf ("%f\n", x.d);
+  uint8_t b[] = { 0x1f, 0x05, 0, 0, 0xa2, 3, 0, 0, 0x64, 0, 0, 0 };
+  int n = sizeof b;
+  for (int i = 0; i <= n - 8; i++)
+    print_double (b + i);
+/*
+  for (int i = 0; i <= n - 4; i++)
+    print_float (b + i);
+*/
   return 0;
 }