1 // Copyright 2016 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef V8_BASE_IEEE754_H_ 6 #define V8_BASE_IEEE754_H_ 7 8 #include "src/base/base-export.h" 9 10 namespace v8 { 11 namespace base { 12 namespace ieee754 { 13 14 // Returns the arc cosine of |x|; that is the value whose cosine is |x|. 15 V8_BASE_EXPORT double acos(double x); 16 17 // Returns the inverse hyperbolic cosine of |x|; that is the value whose 18 // hyperbolic cosine is |x|. 19 V8_BASE_EXPORT double acosh(double x); 20 21 // Returns the arc sine of |x|; that is the value whose sine is |x|. 22 V8_BASE_EXPORT double asin(double x); 23 24 // Returns the inverse hyperbolic sine of |x|; that is the value whose 25 // hyperbolic sine is |x|. 26 V8_BASE_EXPORT double asinh(double x); 27 28 // Returns the principal value of the arc tangent of |x|; that is the value 29 // whose tangent is |x|. 30 V8_BASE_EXPORT double atan(double x); 31 32 // Returns the principal value of the arc tangent of |y/x|, using the signs of 33 // the two arguments to determine the quadrant of the result. 34 V8_BASE_EXPORT double atan2(double y, double x); 35 36 // Returns the cosine of |x|, where |x| is given in radians. 37 V8_BASE_EXPORT double cos(double x); 38 39 // Returns the base-e exponential of |x|. 40 V8_BASE_EXPORT double exp(double x); 41 42 V8_BASE_EXPORT double atanh(double x); 43 44 // Returns the natural logarithm of |x|. 45 V8_BASE_EXPORT double log(double x); 46 47 // Returns a value equivalent to |log(1+x)|, but computed in a way that is 48 // accurate even if the value of |x| is near zero. 49 V8_BASE_EXPORT double log1p(double x); 50 51 // Returns the base 2 logarithm of |x|. 52 V8_BASE_EXPORT double log2(double x); 53 54 // Returns the base 10 logarithm of |x|. 55 V8_BASE_EXPORT double log10(double x); 56 57 // Returns the cube root of |x|. 58 V8_BASE_EXPORT double cbrt(double x); 59 60 // Returns exp(x)-1, the exponential of |x| minus 1. 61 V8_BASE_EXPORT double expm1(double x); 62 63 // Returns |x| to the power of |y|. 64 // The result of base ** exponent when base is 1 or -1 and exponent is 65 // +Infinity or -Infinity differs from IEEE 754-2008. The first edition 66 // of ECMAScript specified a result of NaN for this operation, whereas 67 // later versions of IEEE 754-2008 specified 1. The historical ECMAScript 68 // behaviour is preserved for compatibility reasons. 69 V8_BASE_EXPORT double pow(double x, double y); 70 71 // Returns the sine of |x|, where |x| is given in radians. 72 V8_BASE_EXPORT double sin(double x); 73 74 // Returns the tangent of |x|, where |x| is given in radians. 75 V8_BASE_EXPORT double tan(double x); 76 77 // Returns the hyperbolic cosine of |x|, where |x| is given radians. 78 V8_BASE_EXPORT double cosh(double x); 79 80 // Returns the hyperbolic sine of |x|, where |x| is given radians. 81 V8_BASE_EXPORT double sinh(double x); 82 83 // Returns the hyperbolic tangent of |x|, where |x| is given radians. 84 V8_BASE_EXPORT double tanh(double x); 85 86 } // namespace ieee754 87 } // namespace base 88 } // namespace v8 89 90 #endif // V8_BASE_IEEE754_H_ 91