Merge pull request #254 from lynxlynxlynx/master

test&doc friday

Author: timlinux

INSTALL

@@ -110,7 +110,7 @@ Optional dependencies:
 - for postgis support and SPIT plugin - PostgreSQL >= 8.0.x
 - for gps plugin - expat >= 1.95 and gpsbabel
 - for mapserver export and PyQGIS - Python >= 2.3 (2.5+ preferred)
-- for python support - SIP >= 4.8, PyQt >= must match Qt version, Qscintilla2
+- for python support - SIP >= 4.8, PyQt >= must match Qt version, Qscintilla2 with python bindings
 - for qgis mapserver - FastCGI
 
 

resources/function_help/ln-en_US

@@ -0,0 +1,15 @@
+<h3>ln() function</h3>
+Returns the value of the natural logarithm of the passed expression.
+<br>
+This function takes one argument.
+<h4>Syntax</h4>
+<code>ln(value)</code><br>
+
+<h4>Arguments</h4>
+<code>value</code> - any positive number.
+<br>
+
+<h4>Example</h4>
+<!-- Show example of function.-->
+<code>ln(1) &rarr; 0</code><br>
+<code>ln(e) &rarr; 1</code><br>

resources/function_help/log-en_US

@@ -0,0 +1,16 @@
+<h3>log() function</h3>
+Returns the value of the logarithm of the passed value and base.
+<br>
+This function takes two arguments.
+<h4>Syntax</h4>
+<code>log(base, value)</code><br>
+
+<h4>Arguments</h4>
+<code>base</code> - any positive number.
+<code>value</code> - any positive number.
+<br>
+
+<h4>Example</h4>
+<!-- Show example of function.-->
+<code>log(2, 32) &rarr; 5</code><br>
+<code>log(0.5, 32) &rarr; -5</code><br>

resources/function_help/log10-en_US

@@ -0,0 +1,15 @@
+<h3>log10() function</h3>
+Returns the value of the base 10 logarithm of the passed expression.
+<br>
+This function takes one argument.
+<h4>Syntax</h4>
+<code>log10(value)</code><br>
+
+<h4>Arguments</h4>
+<code>value</code> - any positive number.
+<br>
+
+<h4>Example</h4>
+<!-- Show example of function.-->
+<code>log10(1) &rarr; 0</code><br>
+<code>log10(100) &rarr; 2</code><br>

tests/src/core/testqgsexpression.cpp

@@ -246,6 +246,9 @@ class TestQgsExpression: public QObject
       QTest::newRow( "log10(100)" ) << "log10(100)" << false << QVariant( 2. );
       QTest::newRow( "log(2,32)" ) << "log(2,32)" << false << QVariant( 5. );
       QTest::newRow( "log(10,1000)" ) << "log(10,1000)" << false << QVariant( 3. );
+      QTest::newRow( "log(-2,32)" ) << "log(-2,32)" << false << QVariant( );
+      QTest::newRow( "log(2,-32)" ) << "log(2,-32)" << false << QVariant( );
+      QTest::newRow( "log(0.5,32)" ) << "log(0.5,32)" << false << QVariant( -5. );
       QTest::newRow( "round(1234.557,2) - round up" ) << "round(1234.557,2)" << false << QVariant( 1234.56 );
       QTest::newRow( "round(1234.554,2) - round down" ) << "round(1234.554,2)" << false << QVariant( 1234.55 );
       QTest::newRow( "round(1234.6) - round up to int" ) << "round(1234.6)" << false << QVariant( 1235 );