+ Press n or j to go to the next uncovered block, b, p or k for the previous block. +
+ +| File | ++ | Statements | ++ | Branches | ++ | Functions | ++ | Lines | ++ |
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| index.js | +
+
+ |
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+
+ |
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+
+ |
+ 100% | +56/56 | +100% | +2/2 | +100% | +1/1 | +100% | +56/56 | +
+ Press n or j to go to the next uncovered block, b, p or k for the previous block. +
+ +| 1 +2 +3 +4 +5 +6 +7 +8 +9 +10 +11 +12 +13 +14 +15 +16 +17 +18 +19 +20 +21 +22 +23 +24 +25 +26 +27 +28 +29 +30 +31 +32 +33 +34 +35 +36 +37 +38 +39 +40 +41 +42 +43 +44 +45 +46 +47 +48 +49 +50 +51 +52 +53 +54 +55 +56 +57 +58 +59 +60 +61 +62 | 1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x + | /** +* @license Apache-2.0 +* +* Copyright (c) 2018 The Stdlib Authors. +* +* Licensed under the Apache License, Version 2.0 (the "License"); +* you may not use this file except in compliance with the License. +* You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +*/ + +'use strict'; + +/** +* Compute the angle in the plane (in radians) between the positive x-axis and the ray from `(0,0)` to the point `(x,y)`. +* +* @module @stdlib/math/base/special/atan2 +* +* @example +* var atan2 = require( '@stdlib/math/base/special/atan2' ); +* +* var v = atan2( 2.0, 2.0 ); // => atan(1.0) +* // returns ~0.785 +* +* v = atan2( 6.0, 2.0 ); // => atan(3.0) +* // returns ~1.249 +* +* v = atan2( -1.0, -1.0 ); // => atan(1.0) - π +* // returns ~-2.356 +* +* v = atan2( 3.0, 0.0 ); // => π/2 +* // returns ~1.571 +* +* v = atan2( -2.0, 0.0 ); // => -π/2 +* // returns ~-1.571 +* +* v = atan2( 0.0, 0.0 ); +* // returns 0.0 +* +* v = atan2( 3.0, NaN ); +* // returns NaN +* +* v = atan2( NaN, 2.0 ); +* // returns NaN +*/ + +// MODULES // + +var atan2 = require( './main.js' ); + + +// EXPORTS // + +module.exports = atan2; + |
+ Press n or j to go to the next uncovered block, b, p or k for the previous block. +
+ +| 1 +2 +3 +4 +5 +6 +7 +8 +9 +10 +11 +12 +13 +14 +15 +16 +17 +18 +19 +20 +21 +22 +23 +24 +25 +26 +27 +28 +29 +30 +31 +32 +33 +34 +35 +36 +37 +38 +39 +40 +41 +42 +43 +44 +45 +46 +47 +48 +49 +50 +51 +52 +53 +54 +55 +56 +57 +58 +59 +60 +61 +62 +63 +64 +65 +66 +67 +68 +69 +70 +71 +72 +73 +74 +75 +76 +77 +78 +79 +80 +81 +82 +83 +84 +85 +86 +87 +88 +89 +90 +91 +92 +93 +94 +95 +96 +97 +98 +99 +100 +101 +102 +103 +104 +105 +106 +107 +108 +109 +110 +111 +112 +113 +114 +115 +116 +117 +118 +119 +120 +121 +122 +123 +124 +125 +126 +127 +128 +129 +130 +131 +132 +133 +134 +135 +136 +137 +138 +139 +140 +141 +142 +143 +144 +145 +146 +147 +148 +149 +150 +151 +152 +153 +154 +155 +156 +157 +158 +159 +160 +161 +162 +163 +164 +165 +166 +167 +168 +169 +170 +171 +172 +173 +174 | 1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +7050x +7050x +7050x +2x +2x +7050x +13x +5x +2x +2x +3x +3x +8x +13x +2x +2x +6x +6x +7050x +6x +6x +7050x +20x +10x +10x +10x +10x +7050x +6x +6x +7003x +7050x +2002x +1001x +1001x +1001x +1001x +5001x +7050x +1x +1x +1x +1x +1x + | /**
+* @license Apache-2.0
+*
+* Copyright (c) 2018 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+*
+* ## Notice
+*
+* The original code, copyright and license are from [Go]{@link https://golang.org/src/math/atan2.go}. The implementation follows the original, but has been modified for JavaScript.
+*
+* ```text
+* Copyright (c) 2009 The Go Authors. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*
+* * Redistributions of source code must retain the above copyright
+* notice, this list of conditions and the following disclaimer.
+* * Redistributions in binary form must reproduce the above
+* copyright notice, this list of conditions and the following disclaimer
+* in the documentation and/or other materials provided with the
+* distribution.
+* * Neither the name of Google Inc. nor the names of its
+* contributors may be used to endorse or promote products derived from
+* this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+* ```
+*/
+
+'use strict';
+
+// MODULES //
+
+var isinfinite = require( '@stdlib/math/base/assert/is-infinite' );
+var copysign = require( '@stdlib/math/base/special/copysign' );
+var signbit = require( '@stdlib/number/float64/base/signbit' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var atan = require( '@stdlib/math/base/special/atan' );
+var PINF = require( '@stdlib/constants/float64/pinf' );
+var PI = require( '@stdlib/constants/float64/pi' );
+
+
+// MAIN //
+
+/**
+* Computes the angle in the plane (in radians) between the positive x-axis and the ray from `(0,0)` to the point `(x,y)`.
+*
+* ## Special Cases
+*
+* ```tex
+* \begin{align*}
+* \operatorname{atan2}(y,\mathrm{NaN}) &= \mathrm{NaN}\\
+* \operatorname{atan2}(\mathrm{NaN},x) &= \mathrm{NaN}\\
+* \operatorname{atan2}( +0,x \ge 0 ) &= +0 \\
+* \operatorname{atan2}( -0, x \ge 0 ) &= -0 \\
+* \operatorname{atan2}( +0,x \le -0 ) &= +\Pi \\
+* \operatorname{atan2}( -0, x \le -0 ) &= -\Pi \\
+* \operatorname{atan2}(+\infty, +\infty) &= +\tfrac{\Pi}{4} \\
+* \operatorname{atan2}(-\infty, +\infty) &= -\tfrac{\Pi}{4} \\
+* \operatorname{atan2}(+\infty, -\infty) &= +\tfrac{3\Pi}{4} \\
+* \operatorname{atan2}(-\infty, -\infty) &= -\tfrac{3\Pi}{4} \\
+* \operatorname{atan2}(y, +\infty) &= 0.0 \\
+* \operatorname{atan2}(y>0, -\infty) &= +\Pi \\
+* \operatorname{atan2}(y<0, -\infty) &= -\Pi \\
+* \operatorname{atan2}(+\infty, x ) &= +\tfrac{\Pi}{2} \\
+* \operatorname{atan2}(-\infty, x ) &= -\tfrac{\Pi}{2} \\
+* \end{align*}
+* ```
+*
+* @param {number} y - `y` coordinate
+* @param {number} x - `x` coordinate
+* @returns {number} angle (in radians)
+*
+* @example
+* var v = atan2( 2.0, 2.0 ); // => atan(1.0)
+* // returns ~0.785
+*
+* @example
+* var v = atan2( 6.0, 2.0 ); // => atan(3.0)
+* // returns ~1.249
+*
+* @example
+* var v = atan2( -1.0, -1.0 ); // => atan(1.0) - π
+* // returns ~-2.356
+*
+* @example
+* var v = atan2( 3.0, 0.0 ); // => π/2
+* // returns ~1.571
+*
+* @example
+* var v = atan2( -2.0, 0.0 ); // => -π/2
+* // returns ~-1.571
+*
+* @example
+* var v = atan2( 0.0, 0.0 );
+* // returns 0.0
+*
+* @example
+* var v = atan2( 3.0, NaN );
+* // returns NaN
+*
+* @example
+* var v = atan2( NaN, 2.0 );
+* // returns NaN
+*/
+function atan2( y, x ) {
+ var q;
+ if ( isnan( x ) || isnan( y ) ) {
+ return NaN;
+ }
+ if ( isinfinite( x ) ) {
+ if ( x === PINF ) {
+ if ( isinfinite( y ) ) {
+ return copysign( PI / 4.0, y );
+ }
+ return copysign( 0.0, y );
+ }
+ // Case: x is -Infinity
+ if ( isinfinite( y ) ) {
+ return copysign( 3.0*PI/4.0, y );
+ }
+ return copysign( PI, y );
+ }
+ if ( isinfinite( y ) ) {
+ return copysign( PI / 2.0, y );
+ }
+ if ( y === 0.0 ) {
+ if ( x >= 0.0 && !signbit( x ) ) {
+ return copysign( 0.0, y );
+ }
+ return copysign( PI, y );
+ }
+ if ( x === 0.0 ) {
+ return copysign( PI / 2.0, y );
+ }
+ q = atan( y / x );
+ if ( x < 0.0 ) {
+ if ( q <= 0.0 ) {
+ return q + PI;
+ }
+ return q - PI;
+ }
+ return q;
+}
+
+
+// EXPORTS //
+
+module.exports = atan2;
+ |
+ Press n or j to go to the next uncovered block, b, p or k for the previous block. +
+ +| 1 +2 +3 +4 +5 +6 +7 +8 +9 +10 +11 +12 +13 +14 +15 +16 +17 +18 +19 +20 +21 +22 +23 +24 +25 +26 +27 +28 +29 +30 +31 +32 +33 +34 +35 +36 +37 +38 +39 +40 +41 +42 +43 +44 +45 +46 +47 +48 +49 +50 +51 +52 +53 +54 +55 +56 +57 | 1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +7050x +7050x +7050x +1x +1x +1x +1x +1x + | /**
+* @license Apache-2.0
+*
+* Copyright (c) 2024 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var addon = require( './../src/addon.node' );
+
+/**
+* Computes the angle in the plane (in radians) between the positive x-axis and the ray from `(0,0)` to the point `(x,y)`.
+*
+* @private
+* @param {number} y - `y` coordinate
+* @param {number} x - `x` coordinate
+* @returns {number} angle (in radians)
+*
+* @example
+* var v = atan2( 2.0, 2.0 ); // => atan(1.0)
+* // returns ~0.785
+*
+* @example
+* v = atan2( 6.0, 2.0 ); // => atan(3.0)
+* // returns ~1.249
+*
+* @example
+* v = atan2( 3.0, 0.0 ); // => π/2
+* // returns ~1.571
+*
+* @example
+* v = atan2( 3.0, NaN );
+* // returns NaN
+*/
+function atan2( y, x ) {
+ return addon( y, x );
+}
+
+
+// EXPORTS //
+
+module.exports = atan2;
+ |