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authorBjörn Gustavsson <[email protected]>2016-06-27 12:54:04 +0200
committerBjörn Gustavsson <[email protected]>2016-09-05 11:49:13 +0200
commit6d40cfd77f1d2f1e1403e4b41c0b53ae6499ea11 (patch)
tree774f51ba146c2b172b73bf778c6d8e820d0a0d9c /lib/stdlib/src/math.erl
parent986d32a62b20c32338dac4dfd27c141c8f9be0fe (diff)
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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.erl13
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(_) ->