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Diffstat (limited to 'math/mathcalls.h')
| -rw-r--r-- | math/mathcalls.h | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/math/mathcalls.h b/math/mathcalls.h new file mode 100644 index 0000000000..656352ec2c --- /dev/null +++ b/math/mathcalls.h @@ -0,0 +1,232 @@ +/* Prototype declarations for math functions; helper file for <math.h>. +Copyright (C) 1996 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 Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +/* NOTE: Because of the special way this file is used by <math.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,[_r], (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,[_r], (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 _MATH_H + #error "Never include mathcalls.h directly; include <math.h> instead." +#endif + + +/* Trigonometric functions. */ + +/* Arc cosine of X. */ +__MATHCALL (acos,, (_Mdouble_ __x)); +/* Arc sine of X. */ +__MATHCALL (asin,, (_Mdouble_ __x)); +/* Arc tangent of X. */ +__MATHCALL (atan,, (_Mdouble_ __x)); +/* Arc tangent of Y/X. */ +__MATHCALL (atan2,, (_Mdouble_ __y, _Mdouble_ __x)); + +/* Cosine of X. */ +__MATHCALL (cos,, (_Mdouble_ __x)); +/* Sine of X. */ +__MATHCALL (sin,, (_Mdouble_ __x)); +/* Tangent of X. */ +__MATHCALL (tan,, (_Mdouble_ __x)); + + +/* Hyperbolic functions. */ + +/* Hyperbolic cosine of X. */ +__MATHCALL (cosh,, (_Mdouble_ __x)); +/* Hyperbolic sine of X. */ +__MATHCALL (sinh,, (_Mdouble_ __x)); +/* Hyperbolic tangent of X. */ +__MATHCALL (tanh,, (_Mdouble_ __x)); + +#ifdef __USE_MISC +/* Hyperbolic arc cosine of X. */ +__MATHCALL (acosh,, (_Mdouble_ __x)); +/* Hyperbolic arc sine of X. */ +__MATHCALL (asinh,, (_Mdouble_ __x)); +/* Hyperbolic arc tangent of X. */ +__MATHCALL (atanh,, (_Mdouble_ __x)); +#endif + +/* Exponential and logarithmic functions. */ + +/* Exponentional function of X. */ +__MATHCALL (exp,, (_Mdouble_ __x)); + +/* Break VALUE into a normalized fraction and an integral power of 2. */ +__MATHCALL (frexp,, (_Mdouble_ __value, int *__exp)); + +/* X times (two to the EXP power). */ +__MATHCALL (ldexp,, (_Mdouble_ __x, int __exp)); + +/* Natural logarithm of X. */ +__MATHCALL (log,, (_Mdouble_ __x)); + +/* Base-ten logarithm of X. */ +__MATHCALL (log10,, (_Mdouble_ __x)); + +#ifdef __USE_MISC +/* Return exp(X) - 1. */ +__MATHCALL (expm1,, (_Mdouble_ __x)); + +/* Return log(1 + X). */ +__MATHCALL (log1p,, (_Mdouble_ __x)); +#endif + +/* Break VALUE into integral and fractional parts. */ +__MATHCALL (modf,, (_Mdouble_ __value, _Mdouble_ *__iptr)); + + +/* Power functions. */ + +/* Return X to the Y power. */ +__MATHCALL (pow,, (_Mdouble_ __x, _Mdouble_ __y)); + +/* Return the square root of X. */ +__MATHCALL (sqrt,, (_Mdouble_ __x)); + +#ifdef __USE_MISC +/* Return the cube root of X. */ +__MATHCALL (cbrt,, (_Mdouble_ __x)); +#endif + + +/* Nearest integer, absolute value, and remainder functions. */ + +/* Smallest integral value not less than X. */ +__MATHCALL (ceil,, (_Mdouble_ __x)); + +/* Absolute value of X. */ +__MATHCALL (fabs,, (_Mdouble_ __x)); + +/* Largest integer not greater than X. */ +__MATHCALL (floor,, (_Mdouble_ __x)); + +/* Floating-point modulo remainder of X/Y. */ +__MATHCALL (fmod,, (_Mdouble_ __x, _Mdouble_ __y)); + + +#ifdef __USE_MISC + +/* Return 0 if VALUE is finite or NaN, +1 if it + is +Infinity, -1 if it is -Infinity. */ +__MATHDECL (int, isinf,, (_Mdouble_ __value)); + +/* Return nonzero if VALUE is not a number. */ +__MATHDECL (int, isnan,, (_Mdouble_ __value)); + +/* Return nonzero if VALUE is finite and not NaN. */ +__MATHDECL (int, finite,, (_Mdouble_ __value)); + +/* Deal with an infinite or NaN result. + If ERROR is ERANGE, result is +Inf; + if ERROR is - ERANGE, result is -Inf; + otherwise result is NaN. + This will set `errno' to either ERANGE or EDOM, + and may return an infinity or NaN, or may do something else. */ +__MATHCALL (infnan,, (int __error)); + +/* Return X with its signed changed to Y's. */ +__MATHCALL (copysign,, (_Mdouble_ __x, _Mdouble_ __y)); + +/* Return X times (2 to the Nth power). */ +__MATHCALL (scalb,, (_Mdouble_ __x, _Mdouble_ __n)); + +/* Return X times (2 to the Nth power). */ +__MATHCALL (scalbn,, (_Mdouble_ __x, int __n)); + +/* Return the remainder of X/Y. */ +__MATHCALL (drem,, (_Mdouble_ __x, _Mdouble_ __y)); + +/* Return the base 2 signed integral exponent of X. */ +__MATHCALL (logb,, (_Mdouble_ __x)); + +/* Return the integer nearest X in the direction of the + prevailing rounding mode. */ +__MATHCALL (rint,, (_Mdouble_ __x)); + +/* Return `sqrt(X*X + Y*Y)'. */ +__MATHCALL (hypot,, (_Mdouble_ __x, _Mdouble_ __y)); + +struct __MATH_PRECNAME(__cabs_complex,) +{ + _Mdouble_ x, y; +}; + +/* Return `sqrt(X*X + Y*Y)'. */ +__MATHCALL (cabs,, (struct __MATH_PRECNAME(__cabs_complex,))); + + +/* Return X + epsilon if X < Y, X - epsilon if X > Y. */ +__MATHCALL (nextafter,, (_Mdouble_ __x, _Mdouble_ __y)); + +/* Return the remainder of integer divison X / Y with infinite precision. */ +__MATHCALL (remainder,, (_Mdouble_ __x, _Mdouble_ __y)); + +/* Return the binary exponent of X, which must be nonzero. */ +__MATHDECL (int, ilogb,, (_Mdouble_ __x)); + +/* Return the fractional part of X after dividing out `ilogb (X)'. */ +__MATHCALL (significand,, (_Mdouble_ __x)); + + + +/* Error, gamma, and Bessel functions. */ +__MATHCALL (erf,, (_Mdouble_)); +__MATHCALL (erfc,, (_Mdouble_)); +__MATHCALL (gamma,, (_Mdouble_)); +__MATHCALL (j0,, (_Mdouble_)); +__MATHCALL (j1,, (_Mdouble_)); +__MATHCALL (jn,, (int, _Mdouble_)); +__MATHCALL (lgamma,, (_Mdouble_)); +__MATHCALL (y0,, (_Mdouble_)); +__MATHCALL (y1,, (_Mdouble_)); +__MATHCALL (yn,, (int, _Mdouble_)); + +/* This variable is used by `gamma' and `lgamma'. */ +extern int signgam; + +#ifdef __USE_REENTRANT + +/* Reentrant versions of gamma and lgamma. Those functions use the global + variable `signgam'. The reentrant versions instead take a pointer and + store the value through it. */ +__MATHCALL (gamma,_r, (_Mdouble_, int *)); +__MATHCALL (lgamma,_r, (_Mdouble_, int *)); +#endif + +#endif /* Use misc. */ |