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-rw-r--r--target-ppc/mfrom_table_gen.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/target-ppc/mfrom_table_gen.c b/target-ppc/mfrom_table_gen.c
new file mode 100644
index 0000000000..ab4b1cc0bd
--- /dev/null
+++ b/target-ppc/mfrom_table_gen.c
@@ -0,0 +1,33 @@
+#define _GNU_SOURCE
+#include <stdint.h>
+#include <stdio.h>
+#include <math.h>
+
+int main (void)
+{
+ double d;
+ uint8_t n;
+ int i;
+
+ printf("static const uint8_t mfrom_ROM_table[602] =\n{\n ");
+ for (i = 0; i < 602; i++) {
+ /* Extremly decomposed:
+ * -T0 / 256
+ * T0 = 256 * log10(10 + 1.0) + 0.5
+ */
+ d = -i;
+ d /= 256.0;
+ d = exp10(d);
+ d += 1.0;
+ d = log10(d);
+ d *= 256;
+ d += 0.5;
+ n = d;
+ printf("%3d, ", n);
+ if ((i & 7) == 7)
+ printf("\n ");
+ }
+ printf("\n};\n");
+
+ return 0;
+}