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- /***********************************************************
- Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
- The Netherlands.
-
- All Rights Reserved
-
- Permission to use, copy, modify, and distribute this software and its
- documentation for any purpose and without fee is hereby granted,
- provided that the above copyright notice appear in all copies and that
- both that copyright notice and this permission notice appear in
- supporting documentation, and that the names of Stichting Mathematisch
- Centrum or CWI or Corporation for National Research Initiatives or
- CNRI not be used in advertising or publicity pertaining to
- distribution of the software without specific, written prior
- permission.
-
- While CWI is the initial source for this software, a modified version
- is made available by the Corporation for National Research Initiatives
- (CNRI) at the Internet address ftp://ftp.python.org.
-
- STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
- REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
- MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
- CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
- DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
- PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- PERFORMANCE OF THIS SOFTWARE.
-
- ******************************************************************/
-
- /* Math module -- standard C math library functions, pi and e */
-
- #include "allobjects.h"
-
- #include <errno.h>
-
- #define getdoublearg(v, a) getargs(v, "d", a)
- #define get2doublearg(v, a, b) getargs(v, "(dd)", a, b)
-
- #include "mymath.h"
-
- #include "protos/mathmodule_protos.h"
-
- #ifndef _MSC_VER
- #ifndef __STDC__
- extern double fmod PROTO((double, double));
- extern double frexp PROTO((double, int *));
- extern double ldexp PROTO((double, int));
- extern double modf PROTO((double, double *));
- #endif /* __STDC__ */
- #endif /* _MSC_VER */
-
-
- #ifdef i860
- /* Cray APP has bogus definition of HUGE_VAL in <math.h> */
- #undef HUGE_VAL
- #endif
-
- #ifdef HUGE_VAL
- #define CHECK(x) if (errno != 0) ; \
- else if (-HUGE_VAL <= (x) && (x) <= HUGE_VAL) ; \
- else errno = ERANGE
- #else
- #define CHECK(x) /* Don't know how to check */
- #endif
-
- static object *
- math_error()
- {
- if (errno == EDOM)
- err_setstr(ValueError, "math domain error");
- else if (errno == ERANGE)
- err_setstr(OverflowError, "math range error");
- else
- err_errno(ValueError); /* Unexpected math error */
- return NULL;
- }
-
- #ifdef __SASC
- static object *math_post_f(double x)
- {
- CHECK(x);
- if(errno!=0) return math_error();
- else return newfloatobject(x);
- }
-
- #define FUNC1(stubname,func) \
- static object * stubname(object *self, object *args) { \
- double x; if(!getdoublearg(args,&x)) return NULL; \
- errno=0; x=func(x); return math_post_f(x); }
-
- #define FUNC2(stubname,func) \
- static object * stubname(object *self, object *args) { \
- double x, y; if(!get2doublearg(args, &x, &y)) return NULL; \
- errno=0; x=func(x,y); return math_post_f(x); }
-
- #else
-
- static object *
- math_1(args, func)
- object *args;
- double (*func) FPROTO((double));
- {
- double x;
- if (!getdoublearg(args, &x))
- return NULL;
- errno = 0;
- x = (*func)(x);
- CHECK(x);
- if (errno != 0)
- return math_error();
- else
- return newfloatobject(x);
- }
-
- static object *
- math_2(args, func)
- object *args;
- double (*func) FPROTO((double, double));
- {
- double x, y;
- if (!get2doublearg(args, &x, &y))
- return NULL;
- errno = 0;
- x = (*func)(x, y);
- CHECK(x);
- if (errno != 0)
- return math_error();
- else
- return newfloatobject(x);
- }
-
- #define FUNC1(stubname, func) \
- static object * stubname(self, args) object *self, *args; { \
- return math_1(args, func); \
- }
-
- #define FUNC2(stubname, func) \
- static object * stubname(self, args) object *self, *args; { \
- return math_2(args, func); \
- }
-
- #endif /* not __SASC */
-
- FUNC1(math_acos, acos)
- FUNC1(math_asin, asin)
- FUNC1(math_atan, atan)
- FUNC2(math_atan2, atan2)
- FUNC1(math_ceil, ceil)
- FUNC1(math_cos, cos)
- FUNC1(math_cosh, cosh)
- FUNC1(math_exp, exp)
- #ifdef __MWERKS__
- double myfabs(double x) { return fabs(x); }
- FUNC1(math_fabs, myfabs)
- #else
- FUNC1(math_fabs, fabs)
- #endif
- FUNC1(math_floor, floor)
- FUNC2(math_fmod, fmod)
- FUNC2(math_hypot, hypot)
- FUNC1(math_log, log)
- FUNC1(math_log10, log10)
- #ifdef MPW_3_1 /* This hack is needed for MPW 3.1 but not for 3.2 ... */
- FUNC2(math_pow, power)
- #else
- FUNC2(math_pow, pow)
- #endif
- FUNC1(math_sin, sin)
- FUNC1(math_sinh, sinh)
- FUNC1(math_sqrt, sqrt)
- FUNC1(math_tan, tan)
- FUNC1(math_tanh, tanh)
-
-
- static object *
- math_frexp(self, args)
- object *self;
- object *args;
- {
- double x;
- int i;
- if (!getdoublearg(args, &x))
- return NULL;
- errno = 0;
- x = frexp(x, &i);
- CHECK(x);
- if (errno != 0)
- return math_error();
- return mkvalue("(di)", x, i);
- }
-
- static object *
- math_ldexp(self, args)
- object *self;
- object *args;
- {
- double x, y;
- /* Cheat -- allow float as second argument */
- if (!get2doublearg(args, &x, &y))
- return NULL;
- errno = 0;
- x = ldexp(x, (int)y);
- CHECK(x);
- if (errno != 0)
- return math_error();
- else
- return newfloatobject(x);
- }
-
- static object *
- math_modf(self, args)
- object *self;
- object *args;
- {
- double x, y;
- if (!getdoublearg(args, &x))
- return NULL;
- errno = 0;
- #ifdef MPW /* MPW C modf expects pointer to extended as second argument */
- {
- extended e;
- x = modf(x, &e);
- y = e;
- }
- #else
- x = modf(x, &y);
- #endif
- CHECK(x);
- if (errno != 0)
- return math_error();
- return mkvalue("(dd)", x, y);
- }
-
- static struct methodlist math_methods[] = {
- {"acos", math_acos},
- {"asin", math_asin},
- {"atan", math_atan},
- {"atan2", math_atan2},
- {"ceil", math_ceil},
- {"cos", math_cos},
- {"cosh", math_cosh},
- {"exp", math_exp},
- {"fabs", math_fabs},
- {"floor", math_floor},
- {"fmod", math_fmod},
- {"frexp", math_frexp},
- {"hypot", math_hypot},
- {"ldexp", math_ldexp},
- {"log", math_log},
- {"log10", math_log10},
- {"modf", math_modf},
- {"pow", math_pow},
- {"sin", math_sin},
- {"sinh", math_sinh},
- {"sqrt", math_sqrt},
- {"tan", math_tan},
- {"tanh", math_tanh},
- {NULL, NULL} /* sentinel */
- };
-
- void
- initmath()
- {
- object *m, *d, *v;
-
- m = initmodule("math", math_methods);
- d = getmoduledict(m);
- dictinsert(d, "pi", v = newfloatobject(atan(1.0) * 4.0));
- DECREF(v);
- dictinsert(d, "e", v = newfloatobject(exp(1.0)));
- DECREF(v);
- }
-