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Diffstat (limited to 'n/avr/modules/math/fixed/fixed.h')
-rw-r--r--n/avr/modules/math/fixed/fixed.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/n/avr/modules/math/fixed/fixed.h b/n/avr/modules/math/fixed/fixed.h
index 2337b1c..4f9f77f 100644
--- a/n/avr/modules/math/fixed/fixed.h
+++ b/n/avr/modules/math/fixed/fixed.h
@@ -54,11 +54,11 @@ fixed_div_f824 (int32_t a, int32_t b);
#else /* HOST */
/** Multiply f8.24 by f8.24, return f8.24. */
-#define fixed_mul_f824(a, b) (((uint64_t) (a) * (uint64_t) (b) \
+#define fixed_mul_f824(a, b) (((int64_t) (a) * (int64_t) (b) \
+ 0x800000LL) >> 24)
/** Divide f8.24 by f8.24, return f8.24. */
-#define fixed_div_f824(a, b) (((uint64_t) (a) << 24) / (uint64_t) (b))
+#define fixed_div_f824(a, b) (((int64_t) (a) << 24) / (int64_t) (b))
#endif