Edit: cmathcalls.h
/* Prototype declarations for complex math functions; helper file for <complex.h>. Copyright (C) 1997-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ /* NOTE: Because of the special way this file is used by <complex.h>, this file must NOT be protected from multiple inclusion as header files usually are. This file provides prototype declarations for the math functions. Most functions are declared using the macro: __MATHCALL (NAME, (ARGS...)); This means there is a function `NAME' returning `double' and a function `NAMEf' returning `float'. Each place `_Mdouble_' appears in the prototype, that is actually `double' in the prototype for `NAME' and `float' in the prototype for `NAMEf'. Reentrant variant functions are called `NAME_r' and `NAMEf_r'. Functions returning other types like `int' are declared using the macro: __MATHDECL (TYPE, NAME, (ARGS...)); This is just like __MATHCALL but for a function returning `TYPE' instead of `_Mdouble_'. In all of these cases, there is still both a `NAME' and a `NAMEf' that takes `float' arguments. */ #ifndef _COMPLEX_H #error "Never use <bits/cmathcalls.h> directly; include <complex.h> instead." #endif #ifndef _Mdouble_complex_ # define _Mdouble_complex_ _Mdouble_ _Complex #endif /* Trigonometric functions. */ /* Arc cosine of Z. */ __MATHCALL (cacos, (_Mdouble_complex_ __z)); /* Arc sine of Z. */ __MATHCALL (casin, (_Mdouble_complex_ __z)); /* Arc tangent of Z. */ __MATHCALL (catan, (_Mdouble_complex_ __z)); /* Cosine of Z. */ __MATHCALL (ccos, (_Mdouble_complex_ __z)); /* Sine of Z. */ __MATHCALL (csin, (_Mdouble_complex_ __z)); /* Tangent of Z. */ __MATHCALL (ctan, (_Mdouble_complex_ __z)); /* Hyperbolic functions. */ /* Hyperbolic arc cosine of Z. */ __MATHCALL (cacosh, (_Mdouble_complex_ __z)); /* Hyperbolic arc sine of Z. */ __MATHCALL (casinh, (_Mdouble_complex_ __z)); /* Hyperbolic arc tangent of Z. */ __MATHCALL (catanh, (_Mdouble_complex_ __z)); /* Hyperbolic cosine of Z. */ __MATHCALL (ccosh, (_Mdouble_complex_ __z)); /* Hyperbolic sine of Z. */ __MATHCALL (csinh, (_Mdouble_complex_ __z)); /* Hyperbolic tangent of Z. */ __MATHCALL (ctanh, (_Mdouble_complex_ __z)); /* Exponential and logarithmic functions. */ /* Exponential function of Z. */ __MATHCALL (cexp, (_Mdouble_complex_ __z)); /* Natural logarithm of Z. */ __MATHCALL (clog, (_Mdouble_complex_ __z)); #ifdef __USE_GNU /* The base 10 logarithm is not defined by the standard but to implement the standard C++ library it is handy. */ __MATHCALL (clog10, (_Mdouble_complex_ __z)); #endif /* Power functions. */ /* Return X to the Y power. */ __MATHCALL (cpow, (_Mdouble_complex_ __x, _Mdouble_complex_ __y)); /* Return the square root of Z. */ __MATHCALL (csqrt, (_Mdouble_complex_ __z)); /* Absolute value, conjugates, and projection. */ /* Absolute value of Z. */ __MATHDECL (_Mdouble_,cabs, (_Mdouble_complex_ __z)); /* Argument value of Z. */ __MATHDECL (_Mdouble_,carg, (_Mdouble_complex_ __z)); /* Complex conjugate of Z. */ __MATHCALL (conj, (_Mdouble_complex_ __z)); /* Projection of Z onto the Riemann sphere. */ __MATHCALL (cproj, (_Mdouble_complex_ __z)); /* Decomposing complex values. */ /* Imaginary part of Z. */ __MATHDECL (_Mdouble_,cimag, (_Mdouble_complex_ __z)); /* Real part of Z. */ __MATHDECL (_Mdouble_,creal, (_Mdouble_complex_ __z));
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