/* mconf.h * * Common include file for math routines * * * * SYNOPSIS: * * #include "mconf.h" * * * * DESCRIPTION: * * This file contains definitions for error codes that are * passed to the common error handling routine mtherr() * (which see). * * The file also includes a conditional assembly definition * for the type of computer arithmetic (IEEE, DEC, Motorola * IEEE, or UNKnown). * * For Digital Equipment PDP-11 and VAX computers, certain * IBM systems, and others that use numbers with a 56-bit * significand, the symbol DEC should be defined. In this * mode, most floating point constants are given as arrays * of octal integers to eliminate decimal to binary conversion * errors that might be introduced by the compiler. * * For little-endian computers, such as IBM PC, that follow the * IEEE Standard for Binary Floating Point Arithmetic (ANSI/IEEE * Std 754-1985), the symbol IBMPC should be defined. These * numbers have 53-bit significands. In this mode, constants * are provided as arrays of hexadecimal 16 bit integers. * * Big-endian IEEE format is denoted MIEEE. On some RISC * systems such as Sun SPARC, double precision constants * must be stored on 8-byte address boundaries. Since integer * arrays may be aligned differently, the MIEEE configuration * may fail on such machines. * * To accommodate other types of computer arithmetic, all * constants are also provided in a normal decimal radix * which one can hope are correctly converted to a suitable * format by the available C language compiler. To invoke * this mode, define the symbol UNK. * * An important difference among these modes is a predefined * set of machine arithmetic constants for each. The numbers * MACHEP (the machine roundoff error), MAXNUM (largest number * represented), and several other parameters are preset by * the configuration symbol. Check the file const.c to * ensure that these values are correct for your computer. * * Configurations NANS, INFINITIES, MINUSZERO, and DENORMAL * may fail on many systems. Verify that they are supposed * to work on your computer. */ /* Cephes Math Library Release 2.3: June, 1995 Copyright 1984, 1987, 1989, 1995 by Stephen L. Moshier */ /* Constant definitions for math error conditions */ #define DOMAIN 1 /* argument domain error */ #define SING 2 /* argument singularity */ #define OVERFLOW 3 /* overflow range error */ #define UNDERFLOW 4 /* underflow range error */ #define TLOSS 5 /* total loss of precision */ #define PLOSS 6 /* partial loss of precision */ #define EDOM 33 #define ERANGE 34 /* Complex numeral. */ 00080 typedef struct { double r; double i; } cmplx; /* Long double complex numeral. */ /* typedef struct { long double r; long double i; } cmplxl; */ /* Type of computer arithmetic */ /* PDP-11, Pro350, VAX: */ /* #define DEC 1 */ /* Intel IEEE, low order words come first: */ /*#define IBMPC 1 */ /* Motorola IEEE, high order words come first * (Sun 680x0 workstation): */ /* #define MIEEE 1 */ /* UNKnown arithmetic, invokes coefficients given in * normal decimal format. Beware of range boundary * problems (MACHEP, MAXLOG, etc. in const.c) and * roundoff problems in pow.c: * (Sun SPARCstation) */ #define UNK 1 /* If you define UNK, then be sure to set BIGENDIAN properly. */ #define BIGENDIAN 0 /* Define this `volatile' if your compiler thinks * that floating point arithmetic obeys the associative * and distributive laws. It will defeat some optimizations * (but probably not enough of them). * * #define VOLATILE volatile */ #define VOLATILE /* For 12-byte long doubles on an i386, pad a 16-bit short 0 * to the end of real constants initialized by integer arrays. * * #define XPD 0, * * Otherwise, the type is 10 bytes long and XPD should be * defined blank (e.g., Microsoft C). * * #define XPD */ #define XPD 0, /* Define to support tiny denormal numbers, else undefine. */ #define DENORMAL 1 /* Define to ask for infinity support, else undefine. */ /* #define INFINITIES 1 */ /* Define to ask for support of numbers that are Not-a-Number, else undefine. This may automatically define INFINITIES in some files. */ /* #define NANS 1 */ /* Define to distinguish between -0.0 and +0.0. */ /* #define MINUSZERO 1 */ /* Define 1 for ANSI C atan2() function See atan.c and clog.c. */ #define ANSIC 1 /* Get ANSI function prototypes, if you want them. */ #ifdef __STDC__ #define ANSIPROT #include "cephes-protos.h" #else int mtherr(); #endif /* Variable for error reporting. See mtherr.c. */ extern int merror;

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