test: add tests to achieve full coverage in math/base/special/trigammaf

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---

Author: Planeshifter

lib/node_modules/@stdlib/math/base/special/trigammaf/test/test.js

@@ -82,6 +82,20 @@ tape( 'if provided a negative integer, the function returns `NaN`', function tes
 	t.end();
 });
 
+tape( 'the function handles negative non-integer values close to zero', function test( t ) {
+	var val;
+
+	val = trigammaf( f32( -0.5 ) );
+	t.strictEqual( typeof val, 'number', 'returns a number' );
+	t.strictEqual( isnanf( val ), false, 'does not return NaN' );
+
+	val = trigammaf( f32( -0.1 ) );
+	t.strictEqual( typeof val, 'number', 'returns a number' );
+	t.strictEqual( isnanf( val ), false, 'does not return NaN' );
+
+	t.end();
+});
+
 tape( 'the function evaluates the trigamma function for positive numbers', function test( t ) {
 	var expected;
 	var x;

lib/node_modules/@stdlib/math/base/special/trigammaf/test/test.rational_p12q12.js

@@ -53,3 +53,33 @@ tape( 'the function evaluates a rational function for negative values', function
 
 	t.end();
 });
+
+tape( 'the function evaluates a rational function for positive values less than or equal to 1', function test( t ) {
+	var v;
+
+	v = evalrational( 0.5 );
+	t.strictEqual( isNumber( v ), true, 'returns expected value' );
+
+	v = evalrational( 0.9 );
+	t.strictEqual( isNumber( v ), true, 'returns expected value' );
+
+	v = evalrational( 1.0 );
+	t.strictEqual( isNumber( v ), true, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the function evaluates a rational function for values greater than 1', function test( t ) {
+	var v;
+
+	v = evalrational( 1.5 );
+	t.strictEqual( isNumber( v ), true, 'returns expected value' );
+
+	v = evalrational( 2.0 );
+	t.strictEqual( isNumber( v ), true, 'returns expected value' );
+
+	v = evalrational( 5.0 );
+	t.strictEqual( isNumber( v ), true, 'returns expected value' );
+
+	t.end();
+});

lib/node_modules/@stdlib/math/base/special/trigammaf/test/test.rational_p24q24.js

@@ -53,3 +53,33 @@ tape( 'the function evaluates a rational function for negative values', function
 
 	t.end();
 });
+
+tape( 'the function evaluates a rational function for positive values less than or equal to 1', function test( t ) {
+	var v;
+
+	v = evalrational( 0.25 );
+	t.strictEqual( isNumber( v ), true, 'returns expected value' );
+
+	v = evalrational( 0.5 );
+	t.strictEqual( isNumber( v ), true, 'returns expected value' );
+
+	v = evalrational( 1.0 );
+	t.strictEqual( isNumber( v ), true, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'the function evaluates a rational function for values greater than 1', function test( t ) {
+	var v;
+
+	v = evalrational( 1.5 );
+	t.strictEqual( isNumber( v ), true, 'returns expected value' );
+
+	v = evalrational( 2.0 );
+	t.strictEqual( isNumber( v ), true, 'returns expected value' );
+
+	v = evalrational( 5.0 );
+	t.strictEqual( isNumber( v ), true, 'returns expected value' );
+
+	t.end();
+});

lib/node_modules/@stdlib/math/base/special/trigammaf/test/test.rational_p4infq4inf.js

@@ -39,6 +39,21 @@ tape( 'the function evaluates a rational function for x = 0', function test( t )
 	t.end();
 });
 
+tape( 'the function evaluates a rational function for positive values less than or equal to 1', function test( t ) {
+	var v;
+
+	v = evalrational( 0.1 );
+	t.strictEqual( isNumber( v ), true, 'returns expected value' );
+
+	v = evalrational( 0.25 );
+	t.strictEqual( isNumber( v ), true, 'returns expected value' );
+
+	v = evalrational( 0.5 );
+	t.strictEqual( isNumber( v ), true, 'returns expected value' );
+
+	t.end();
+});
+
 tape( 'the function evaluates a rational function for negative values', function test( t ) {
 	var v;