diff options
Diffstat (limited to 'src/common/utils.c')
| -rw-r--r-- | src/common/utils.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/common/utils.c b/src/common/utils.c index bcfc153e3..0d76a885e 100644 --- a/src/common/utils.c +++ b/src/common/utils.c @@ -359,6 +359,28 @@ unsigned int get_percentage(const unsigned int A, const unsigned int B) return (unsigned int)floor(result); } +/// calculates the value of A / B, in percent (rounded down) +uint64 get_percentage64(const uint64 A, const uint64 B) +{ + double result; + + if( B == 0 ) + { + ShowError("get_percentage(): division by zero! (A=%"PRIu64",B=%"PRIu64")\n", A, B); + return ~0U; + } + + result = 100 * ((double)A / (double)B); + + if( result > UINT_MAX ) + { + ShowError("get_percentage(): result percentage too high! (A=%"PRIu64",B=%"PRIu64",result=%g)\n", A, B, result); + return UINT_MAX; + } + + return (uint64)floor(result); +} + /** * Applies a percentual rate modifier. * |