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Diffstat (limited to 'sysdeps/ieee754/dbl-64/MathLib.h')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/MathLib.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/sysdeps/ieee754/dbl-64/MathLib.h b/sysdeps/ieee754/dbl-64/MathLib.h new file mode 100644 index 0000000000..40a2944fa2 --- /dev/null +++ b/sysdeps/ieee754/dbl-64/MathLib.h @@ -0,0 +1,102 @@ + +/* + * IBM Accurate Mathematical Library + * Copyright (c) International Business Machines Corp., 2001 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ +/********************************************************************/ +/* Ultimate math functions. Each function computes the exact */ +/* theoretical value of its argument rounded to nearest or even. */ +/* */ +/* Assumption: Machine arithmetic operations are performed in */ +/* round nearest mode of IEEE 754 standard. */ +/********************************************************************/ + +#ifndef UMATH_LIB +#define UMATH_LIB +/********************************************************************/ +/* Function changes the precision mode to IEEE 754 double precision */ +/* and the rounding mode to nearest or even. */ +/* It returns the original status of these modes. */ +/* See further explanations of usage in DPChange.h */ +/********************************************************************/ +unsigned short Init_Lib(); + +/********************************************************************/ +/* Function that changes the precision and rounding modes to the */ +/* specified by the argument received. See further explanations in */ +/* DPChange.h */ +/********************************************************************/ +void Exit_Lib(unsigned short); + + +/* The asin() function calculates the arc sine of its argument. */ +/* The function returns the arc sine in radians */ +/* (between -PI/2 and PI/2). */ +/* If the argument is greater than 1 or less than -1 it returns */ +/* a NaN. */ +double uasin(double ); + + +/* The acos() function calculates the arc cosine of its argument. */ +/* The function returns the arc cosine in radians */ +/* (between -PI/2 and PI/2). */ +/* If the argument is greater than 1 or less than -1 it returns */ +/* a NaN. */ +double uacos(double ); + +/* The atan() function calculates the arctanget of its argument. */ +/* The function returns the arc tangent in radians */ +/* (between -PI/2 and PI/2). */ +double uatan(double ); + + +/* The uatan2() function calculates the arc tangent of the two arguments x */ +/* and y (x is the right argument and y is the left one).The signs of both */ +/* arguments are used to determine the quadrant of the result. */ +/* The function returns the result in radians, which is between -PI and PI */ +double uatan2(double ,double ); + +/* Compute log(x). The base of log is e (natural logarithm) */ +double ulog(double ); + +/* Compute e raised to the power of argument x. */ +double uexp(double ); + +/* Compute sin(x). The argument x is assumed to be given in radians.*/ +double usin(double ); + +/* Compute cos(x). The argument x is assumed to be given in radians.*/ +double ucos(double ); + +/* Compute tan(x). The argument x is assumed to be given in radians.*/ +double utan(double ); + +/* Compute the square root of non-negative argument x. */ +/* If x is negative the returned value is NaN. */ +double usqrt(double ); + +/* Compute x raised to the power of y, where x is the left argument */ +/* and y is the right argument. The function returns a NaN if x<0. */ +/* If x equals zero it returns -inf */ +double upow(double , double ); + +/* Computing x mod y, where x is the left argument and y is the */ +/* right one. */ +double uremainder(double , double ); + + +#endif |