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| author | Marcus Arendt <[email protected]> | 2015-01-16 14:36:05 +0100 |
|---|---|---|
| committer | Marcus Arendt <[email protected]> | 2015-01-16 14:36:05 +0100 |
| commit | 905824012cef106e7bd3796bff36a2aa04b58850 (patch) | |
| tree | 6805bd7570965965e29c89e6673095bbd26599e1 /lib/stdlib | |
| parent | e52e4398a318293d57485c0a47f9c8e50a4b2b4b (diff) | |
| parent | fdf09e81de5e7f1ecfe71f98b56c411073badae8 (diff) | |
| download | otp-905824012cef106e7bd3796bff36a2aa04b58850.tar.gz otp-905824012cef106e7bd3796bff36a2aa04b58850.tar.bz2 otp-905824012cef106e7bd3796bff36a2aa04b58850.zip | |
Merge branch 'oliv3/math_log2/OTP-12411'
* oliv3/math_log2/OTP-12411:
Add math:log2/1
Diffstat (limited to 'lib/stdlib')
| -rw-r--r-- | lib/stdlib/doc/src/math.xml | 1 | ||||
| -rw-r--r-- | lib/stdlib/src/math.erl | 7 |
2 files changed, 7 insertions, 1 deletions
diff --git a/lib/stdlib/doc/src/math.xml b/lib/stdlib/doc/src/math.xml index 43cd20e726..7cfc8a1175 100644 --- a/lib/stdlib/doc/src/math.xml +++ b/lib/stdlib/doc/src/math.xml @@ -67,6 +67,7 @@ <name name="atanh" arity="1"/> <name name="exp" arity="1"/> <name name="log" arity="1"/> + <name name="log2" arity="1"/> <name name="log10" arity="1"/> <name name="pow" arity="2"/> <name name="sqrt" arity="1"/> diff --git a/lib/stdlib/src/math.erl b/lib/stdlib/src/math.erl index 98a70b1644..43f736e54c 100644 --- a/lib/stdlib/src/math.erl +++ b/lib/stdlib/src/math.erl @@ -24,7 +24,7 @@ -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, - log10/1, pow/2, sqrt/1, erf/1, erfc/1]). + log2/1, log10/1, pow/2, sqrt/1, erf/1, erfc/1]). -spec acos(X) -> float() when X :: number(). @@ -92,6 +92,11 @@ exp(_) -> log(_) -> erlang:nif_error(undef). +-spec log2(X) -> float() when + X :: number(). +log2(_) -> + erlang:nif_error(undef). + -spec log10(X) -> float() when X :: number(). log10(_) -> |