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-rw-r--r--lib/compiler/src/beam_type.erl1
-rw-r--r--lib/compiler/src/beam_validator.erl1
-rw-r--r--lib/compiler/src/erl_bifs.erl1
3 files changed, 3 insertions, 0 deletions
diff --git a/lib/compiler/src/beam_type.erl b/lib/compiler/src/beam_type.erl
index b4776294be..d324580cba 100644
--- a/lib/compiler/src/beam_type.erl
+++ b/lib/compiler/src/beam_type.erl
@@ -594,6 +594,7 @@ is_math_bif(atan2, 2) -> true;
is_math_bif(pow, 2) -> true;
is_math_bif(ceil, 1) -> true;
is_math_bif(floor, 1) -> true;
+is_math_bif(fmod, 2) -> true;
is_math_bif(pi, 0) -> true;
is_math_bif(_, _) -> false.
diff --git a/lib/compiler/src/beam_validator.erl b/lib/compiler/src/beam_validator.erl
index 6e53f53a20..5659077c5d 100644
--- a/lib/compiler/src/beam_validator.erl
+++ b/lib/compiler/src/beam_validator.erl
@@ -1646,6 +1646,7 @@ return_type_math(atan2, 2) -> {float,[]};
return_type_math(pow, 2) -> {float,[]};
return_type_math(ceil, 1) -> {float,[]};
return_type_math(floor, 1) -> {float,[]};
+return_type_math(fmod, 2) -> {float,[]};
return_type_math(pi, 0) -> {float,[]};
return_type_math(F, A) when is_atom(F), is_integer(A), A >= 0 -> term.
diff --git a/lib/compiler/src/erl_bifs.erl b/lib/compiler/src/erl_bifs.erl
index 831730ba48..d60f73d421 100644
--- a/lib/compiler/src/erl_bifs.erl
+++ b/lib/compiler/src/erl_bifs.erl
@@ -138,6 +138,7 @@ is_pure(math, erf, 1) -> true;
is_pure(math, erfc, 1) -> true;
is_pure(math, exp, 1) -> true;
is_pure(math, floor, 1) -> true;
+is_pure(math, fmod, 2) -> true;
is_pure(math, log, 1) -> true;
is_pure(math, log2, 1) -> true;
is_pure(math, log10, 1) -> true;