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author | Christian Grothoff <christian@grothoff.org> | 2020-01-13 18:16:01 +0100 |
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committer | Christian Grothoff <christian@grothoff.org> | 2020-01-13 18:16:01 +0100 |
commit | 4d6ef1da29e5c1bf4c2216d9fe0c14dcab0f04cd (patch) | |
tree | 8141db7f726c59d21a81fe37846970237a75d892 /src/util/amount.c | |
parent | 258ed8617bdcad9f1c278a5fdcff97bcf2e29e54 (diff) | |
download | exchange-4d6ef1da29e5c1bf4c2216d9fe0c14dcab0f04cd.tar.xz |
eliminate libtalerwire
Diffstat (limited to 'src/util/amount.c')
-rw-r--r-- | src/util/amount.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/util/amount.c b/src/util/amount.c index 21410c769..edb9dc060 100644 --- a/src/util/amount.c +++ b/src/util/amount.c @@ -672,4 +672,25 @@ TALER_amount_divide (struct TALER_Amount *result, } +/** + * Round the amount to something that can be + * transferred on the wire. + * + * @param[in,out] amount amount to round down + * @return #GNUNET_OK on success, #GNUNET_NO if rounding was unnecessary, + * #GNUNET_SYSERR if the amount or currency was invalid + */ +int +TALER_amount_round (struct TALER_Amount *amount) +{ + uint32_t delta; + + delta = amount->fraction % (TALER_AMOUNT_FRAC_BASE / 100); + if (0 == delta) + return GNUNET_NO; + amount->fraction -= delta; + return GNUNET_OK; +} + + /* end of amount.c */ |