diff options
Diffstat (limited to 'include/math_util.h')
| -rw-r--r-- | include/math_util.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/include/math_util.h b/include/math_util.h index 5412655ec3..948d501033 100644 --- a/include/math_util.h +++ b/include/math_util.h @@ -11,6 +11,9 @@ /* Fixed-point type */ typedef int32_t fp_t; +/* Type used during fp operation */ +typedef int64_t fp_inter_t; + /* Number of bits left of decimal point for fixed-point */ #define FP_BITS 16 @@ -32,7 +35,7 @@ typedef int32_t fp_t; */ static inline fp_t fp_mul(fp_t a, fp_t b) { - return (fp_t)(((int64_t)a * b) >> FP_BITS); + return (fp_t)(((fp_inter_t)a * b) >> FP_BITS); } /** @@ -40,7 +43,7 @@ static inline fp_t fp_mul(fp_t a, fp_t b) */ static inline fp_t fp_div(fp_t a, fp_t b) { - return (fp_t)(((int64_t)a << FP_BITS) / b); + return (fp_t)(((fp_inter_t)a << FP_BITS) / b); } /** |