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[SPARK-23329][SQL] Fix documentation of trigonometric functions #20618

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[SPARK-23329][SQL] Fix documentation of trigonometric functions #20618

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0a0c4ae
[SPARK-23329][SQL] Fix documentation of trigonometric functions
misutoth Feb 13, 2018
168d7b3
[SPARK-23329][SQL] Removed unnecessary aligning, reworded inverse fun…
misutoth Feb 19, 2018
2586b0f
[SPARK-23329][SQL] Fixed formatting of long lines, reverted line brea…
misutoth Feb 19, 2018
8550a27
[SPARK-23329][SQL] Make usage text consistent with other docs, revert…
misutoth Feb 20, 2018
40da998
[SPARK-23329][SQL] Formatting finetunings
misutoth Feb 20, 2018
0e4e15a
[SPARK-23329][SQL] Fix documentation of functions.R, functions.scala,…
misutoth Feb 21, 2018
fcf1338
[SPARK-23329][SQL] Fixed line length
misutoth Feb 28, 2018
2ea1f18
[SPARK-23329][SQL] Fixed line length of functions.py
misutoth Feb 28, 2018
10afda5
[SPARK-23329][SQL] Fixed python style problem
misutoth Mar 1, 2018
627e204
[SPARK-23329][SQL] Formatting fixes, changed scaladoc references
misutoth Mar 2, 2018
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33 changes: 11 additions & 22 deletions sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/mathExpressions.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -259,8 +259,7 @@ case class Ceil(child: Expression) extends UnaryMathExpression(math.ceil, "CEIL"
_FUNC_(expr) - Returns the cosine of `expr`, as if computed by
`java.lang.Math._FUNC_`.
""",
arguments =
"""
arguments = """
Arguments:
* expr - angle in radians
""",
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@HyukjinKwon HyukjinKwon Feb 20, 2018

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Let's remote two spaces ->

      * expr - angle in radians
  """,

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@misutoth misutoth Feb 20, 2018

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yes, indeed that is used elsewhere

Expand All @@ -273,8 +272,7 @@ case class Cos(child: Expression) extends UnaryMathExpression(math.cos, "COS")

@ExpressionDescription(
usage = "_FUNC_(expr) - Returns the hyperbolic cosine of `expr`.",
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@HyukjinKwon HyukjinKwon Feb 20, 2018

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Shall we add java.lang.Math. _FUNC_ here too?

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@misutoth misutoth Feb 20, 2018

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Yes, we should

arguments =
"""
arguments = """
Arguments:
* expr - hyperbolic angle.
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@HyukjinKwon HyukjinKwon Feb 20, 2018

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not a big deal but let's remove the trailing . for consistency.

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@misutoth misutoth Feb 20, 2018

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ok

""",
Expand Down Expand Up @@ -529,8 +527,7 @@ case class Signum(child: Expression) extends UnaryMathExpression(math.signum, "S

@ExpressionDescription(
usage = "_FUNC_(expr) - Returns the sine of `expr`, as if computed by `java.lang.Math._FUNC_`.",
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@felixcheung felixcheung Feb 28, 2018

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I don't know the history of why the text is different here vs python/R https://github.com/apache/spark/blob/master/R/pkg/R/functions.R#L1466

I don't think the doc grouping in R is relevant - the text is there. Generally we try to match the text in scala but I don't feel strongly either way in this case.

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@misutoth misutoth Mar 2, 2018

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As far as the trigonometric functions concerned they should be now in sync I think.

arguments =
"""
arguments = """
Arguments:
* expr - angle in radians
""",
Expand All @@ -543,11 +540,9 @@ case class Sin(child: Expression) extends UnaryMathExpression(math.sin, "SIN")

@ExpressionDescription(
usage = """
_FUNC_(expr) - Returns hyperbolic sine of `expr`, as if computed by
`java.lang.Math._FUNC_`.
_FUNC_(expr) - Returns hyperbolic sine of `expr`, as if computed by `java.lang.Math._FUNC_`.
""",
arguments =
"""
arguments = """
Arguments:
* expr - hyperbolic angle
""",
Expand All @@ -572,8 +567,7 @@ case class Sqrt(child: Expression) extends UnaryMathExpression(math.sqrt, "SQRT"
_FUNC_(expr) - Returns the tangent of `expr`, as if computed by
`java.lang.Math._FUNC_`.
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@HyukjinKwon HyukjinKwon Feb 20, 2018

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Seems the two lines above could fix in one line.

""",
arguments =
"""
arguments = """
Arguments:
* expr - angle in radians
""",
Expand All @@ -589,8 +583,7 @@ case class Tan(child: Expression) extends UnaryMathExpression(math.tan, "TAN")
_FUNC_(expr) - Returns the cotangent of `expr`, as if computed by
`1/java.lang.Math._FUNC_`.
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@HyukjinKwon HyukjinKwon Feb 20, 2018

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ditto for one line

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@misutoth misutoth Feb 20, 2018

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yes

""",
arguments =
"""
arguments = """
Arguments:
* expr - angle in radians
""",
Expand All @@ -611,8 +604,7 @@ case class Cot(child: Expression)
_FUNC_(expr) - Returns the hyperbolic tangent of `expr`, as if computed by
`java.lang.Math._FUNC_`.
""",
arguments =
"""
arguments = """
Arguments:
* expr - hyperbolic angle
""",
Expand All @@ -625,8 +617,7 @@ case class Tanh(child: Expression) extends UnaryMathExpression(math.tanh, "TANH"

@ExpressionDescription(
usage = "_FUNC_(expr) - Converts radians to degrees.",
arguments =
"""
arguments = """
Arguments:
* expr - angle in radians
""",
Expand All @@ -641,8 +632,7 @@ case class ToDegrees(child: Expression) extends UnaryMathExpression(math.toDegre

@ExpressionDescription(
usage = "_FUNC_(expr) - Converts degrees to radians.",
arguments =
"""
arguments = """
Arguments:
* expr - angle in degrees
""",
Expand Down Expand Up @@ -837,8 +827,7 @@ case class Unhex(child: Expression) extends UnaryExpression with ImplicitCastInp
and the point given by the coordinates (`exprX`, `exprY`), as if computed by
`java.lang.Math._FUNC_`.
""",
arguments =
"""
arguments = """
Arguments:
* exprY - coordinate on y-axis
* exprX - coordinate on x-axis
Expand Down
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