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| author | Björn Gustavsson <bjorn@erlang.org> | 2016-06-27 12:54:04 +0200 |
|---|---|---|
| committer | Björn Gustavsson <bjorn@erlang.org> | 2016-09-05 11:49:13 +0200 |
| commit | 6d40cfd77f1d2f1e1403e4b41c0b53ae6499ea11 (patch) | |
| tree | 774f51ba146c2b172b73bf778c6d8e820d0a0d9c /lib/stdlib/src/math.erl | |
| parent | 986d32a62b20c32338dac4dfd27c141c8f9be0fe (diff) | |
| download | erlang-6d40cfd77f1d2f1e1403e4b41c0b53ae6499ea11.tar.gz | |
Add math:floor/1 and math:ceil/1
Add math:floor/1 and math:ceil/1 to avoid unnecessary conversions
in floating point expressions. That is, instead of having to write
float(floor(X)) as part of a floating point expressions, we can
write simply math:floor(X).
Diffstat (limited to 'lib/stdlib/src/math.erl')
| -rw-r--r-- | lib/stdlib/src/math.erl | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/lib/stdlib/src/math.erl b/lib/stdlib/src/math.erl index 97c965e27a..1db48cd0a2 100644 --- a/lib/stdlib/src/math.erl +++ b/lib/stdlib/src/math.erl @@ -25,7 +25,8 @@ -export([sin/1, cos/1, tan/1, asin/1, acos/1, atan/1, atan2/2, sinh/1, cosh/1, tanh/1, asinh/1, acosh/1, atanh/1, exp/1, log/1, - log2/1, log10/1, pow/2, sqrt/1, erf/1, erfc/1]). + log2/1, log10/1, pow/2, sqrt/1, erf/1, erfc/1, + ceil/1, floor/1]). -spec acos(X) -> float() when X :: number(). @@ -63,6 +64,11 @@ atan2(_, _) -> atanh(_) -> erlang:nif_error(undef). +-spec ceil(X) -> float() when + X :: number(). +ceil(_) -> + erlang:nif_error(undef). + -spec cos(X) -> float() when X :: number(). cos(_) -> @@ -88,6 +94,11 @@ erfc(_) -> exp(_) -> erlang:nif_error(undef). +-spec floor(X) -> float() when + X :: number(). +floor(_) -> + erlang:nif_error(undef). + -spec log(X) -> float() when X :: number(). log(_) -> |