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| author | Skip Montanaro <[email protected]> | 2021-02-16 20:14:16 -0600 |
|---|---|---|
| committer | Skip Montanaro <[email protected]> | 2021-02-16 20:14:16 -0600 |
| commit | c2587c76f1b416cdbecb979e54941933246bf856 (patch) | |
| tree | bb61ee9128075ce22af4eafa232f13c2e5a07896 /src/floatobject.c | |
| parent | d90761a005b24018ae237bf551515772a1de656f (diff) | |
| download | python-0.9.1-patched-QoL-c2587c76f1b416cdbecb979e54941933246bf856.tar.xz python-0.9.1-patched-QoL-c2587c76f1b416cdbecb979e54941933246bf856.zip | |
starting over
Diffstat (limited to 'src/floatobject.c')
| -rw-r--r-- | src/floatobject.c | 298 |
1 files changed, 149 insertions, 149 deletions
diff --git a/src/floatobject.c b/src/floatobject.c index c637989..bbf785f 100644 --- a/src/floatobject.c +++ b/src/floatobject.c @@ -2,12 +2,12 @@ Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The Netherlands. - All Rights Reserved + All Rights Reserved -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, +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 +both that copyright notice and this permission notice appear in supporting documentation, and that the names of Stichting Mathematisch Centrum or CWI not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. @@ -25,7 +25,7 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. /* Float object implementation */ /* XXX There should be overflow checks here, but it's hard to check - for any kind of float exception without losing portability. */ + for any kind of float exception without losing portability. */ #include "allobjects.h" @@ -44,227 +44,227 @@ extern double pow PROTO((double, double)); object * newfloatobject(fval) - double fval; + double fval; { - /* For efficiency, this code is copied from newobject() */ - register floatobject *op = (floatobject *) malloc(sizeof(floatobject)); - if (op == NULL) - return err_nomem(); - NEWREF(op); - op->ob_type = &Floattype; - op->ob_fval = fval; - return (object *) op; + /* For efficiency, this code is copied from newobject() */ + register floatobject *op = (floatobject *) malloc(sizeof(floatobject)); + if (op == NULL) + return err_nomem(); + NEWREF(op); + op->ob_type = &Floattype; + op->ob_fval = fval; + return (object *) op; } double getfloatvalue(op) - object *op; + object *op; { - if (!is_floatobject(op)) { - err_badarg(); - return -1; - } - else - return ((floatobject *)op) -> ob_fval; + if (!is_floatobject(op)) { + err_badarg(); + return -1; + } + else + return ((floatobject *)op) -> ob_fval; } /* Methods */ static void float_buf_repr(buf, v) - char *buf; - floatobject *v; + char *buf; + floatobject *v; { - register char *cp; - /* Subroutine for float_repr and float_print. - We want float numbers to be recognizable as such, - i.e., they should contain a decimal point or an exponent. - However, %g may print the number as an integer; - in such cases, we append ".0" to the string. */ - sprintf(buf, "%.12g", v->ob_fval); - cp = buf; - if (*cp == '-') - cp++; - for (; *cp != '\0'; cp++) { - /* Any non-digit means it's not an integer; - this takes care of NAN and INF as well. */ - if (!isdigit(*cp)) - break; - } - if (*cp == '\0') { - *cp++ = '.'; - *cp++ = '0'; - *cp++ = '\0'; - } + register char *cp; + /* Subroutine for float_repr and float_print. + We want float numbers to be recognizable as such, + i.e., they should contain a decimal point or an exponent. + However, %g may print the number as an integer; + in such cases, we append ".0" to the string. */ + sprintf(buf, "%.12g", v->ob_fval); + cp = buf; + if (*cp == '-') + cp++; + for (; *cp != '\0'; cp++) { + /* Any non-digit means it's not an integer; + this takes care of NAN and INF as well. */ + if (!isdigit(*cp)) + break; + } + if (*cp == '\0') { + *cp++ = '.'; + *cp++ = '0'; + *cp++ = '\0'; + } } static void float_print(v, fp, flags) - floatobject *v; - FILE *fp; - int flags; + floatobject *v; + FILE *fp; + int flags; { - char buf[100]; - float_buf_repr(buf, v); - fputs(buf, fp); + char buf[100]; + float_buf_repr(buf, v); + fputs(buf, fp); } static object * float_repr(v) - floatobject *v; + floatobject *v; { - char buf[100]; - float_buf_repr(buf, v); - return newstringobject(buf); + char buf[100]; + float_buf_repr(buf, v); + return newstringobject(buf); } static int float_compare(v, w) - floatobject *v, *w; + floatobject *v, *w; { - double i = v->ob_fval; - double j = w->ob_fval; - return (i < j) ? -1 : (i > j) ? 1 : 0; + double i = v->ob_fval; + double j = w->ob_fval; + return (i < j) ? -1 : (i > j) ? 1 : 0; } static object * float_add(v, w) - floatobject *v; - object *w; + floatobject *v; + object *w; { - if (!is_floatobject(w)) { - err_badarg(); - return NULL; - } - return newfloatobject(v->ob_fval + ((floatobject *)w) -> ob_fval); + if (!is_floatobject(w)) { + err_badarg(); + return NULL; + } + return newfloatobject(v->ob_fval + ((floatobject *)w) -> ob_fval); } static object * float_sub(v, w) - floatobject *v; - object *w; + floatobject *v; + object *w; { - if (!is_floatobject(w)) { - err_badarg(); - return NULL; - } - return newfloatobject(v->ob_fval - ((floatobject *)w) -> ob_fval); + if (!is_floatobject(w)) { + err_badarg(); + return NULL; + } + return newfloatobject(v->ob_fval - ((floatobject *)w) -> ob_fval); } static object * float_mul(v, w) - floatobject *v; - object *w; + floatobject *v; + object *w; { - if (!is_floatobject(w)) { - err_badarg(); - return NULL; - } - return newfloatobject(v->ob_fval * ((floatobject *)w) -> ob_fval); + if (!is_floatobject(w)) { + err_badarg(); + return NULL; + } + return newfloatobject(v->ob_fval * ((floatobject *)w) -> ob_fval); } static object * float_div(v, w) - floatobject *v; - object *w; + floatobject *v; + object *w; { - if (!is_floatobject(w)) { - err_badarg(); - return NULL; - } - if (((floatobject *)w) -> ob_fval == 0) { - err_setstr(ZeroDivisionError, "float division by zero"); - return NULL; - } - return newfloatobject(v->ob_fval / ((floatobject *)w) -> ob_fval); + if (!is_floatobject(w)) { + err_badarg(); + return NULL; + } + if (((floatobject *)w) -> ob_fval == 0) { + err_setstr(ZeroDivisionError, "float division by zero"); + return NULL; + } + return newfloatobject(v->ob_fval / ((floatobject *)w) -> ob_fval); } static object * float_rem(v, w) - floatobject *v; - object *w; + floatobject *v; + object *w; { - double wx; - if (!is_floatobject(w)) { - err_badarg(); - return NULL; - } - wx = ((floatobject *)w) -> ob_fval; - if (wx == 0.0) { - err_setstr(ZeroDivisionError, "float division by zero"); - return NULL; - } - return newfloatobject(fmod(v->ob_fval, wx)); + double wx; + if (!is_floatobject(w)) { + err_badarg(); + return NULL; + } + wx = ((floatobject *)w) -> ob_fval; + if (wx == 0.0) { + err_setstr(ZeroDivisionError, "float division by zero"); + return NULL; + } + return newfloatobject(fmod(v->ob_fval, wx)); } static object * float_pow(v, w) - floatobject *v; - object *w; + floatobject *v; + object *w; { - double iv, iw, ix; - if (!is_floatobject(w)) { - err_badarg(); - return NULL; - } - iv = v->ob_fval; - iw = ((floatobject *)w)->ob_fval; - if (iw == 0.0) - return newfloatobject(1.0); /* x**0 is always 1, even 0**0 */ - errno = 0; - ix = pow(iv, iw); - if (errno != 0) { - /* XXX could it be another type of error? */ - err_errno(OverflowError); - return NULL; - } - return newfloatobject(ix); + double iv, iw, ix; + if (!is_floatobject(w)) { + err_badarg(); + return NULL; + } + iv = v->ob_fval; + iw = ((floatobject *)w)->ob_fval; + if (iw == 0.0) + return newfloatobject(1.0); /* x**0 is always 1, even 0**0 */ + errno = 0; + ix = pow(iv, iw); + if (errno != 0) { + /* XXX could it be another type of error? */ + err_errno(OverflowError); + return NULL; + } + return newfloatobject(ix); } static object * float_neg(v) - floatobject *v; + floatobject *v; { - return newfloatobject(-v->ob_fval); + return newfloatobject(-v->ob_fval); } static object * float_pos(v) - floatobject *v; + floatobject *v; { - return newfloatobject(v->ob_fval); + return newfloatobject(v->ob_fval); } static number_methods float_as_number = { - float_add, /*tp_add*/ - float_sub, /*tp_subtract*/ - float_mul, /*tp_multiply*/ - float_div, /*tp_divide*/ - float_rem, /*tp_remainder*/ - float_pow, /*tp_power*/ - float_neg, /*tp_negate*/ - float_pos, /*tp_plus*/ + float_add, /*tp_add*/ + float_sub, /*tp_subtract*/ + float_mul, /*tp_multiply*/ + float_div, /*tp_divide*/ + float_rem, /*tp_remainder*/ + float_pow, /*tp_power*/ + float_neg, /*tp_negate*/ + float_pos, /*tp_plus*/ }; typeobject Floattype = { - OB_HEAD_INIT(&Typetype) - 0, - "float", - sizeof(floatobject), - 0, - free, /*tp_dealloc*/ - float_print, /*tp_print*/ - 0, /*tp_getattr*/ - 0, /*tp_setattr*/ - float_compare, /*tp_compare*/ - float_repr, /*tp_repr*/ - &float_as_number, /*tp_as_number*/ - 0, /*tp_as_sequence*/ - 0, /*tp_as_mapping*/ + OB_HEAD_INIT(&Typetype) + 0, + "float", + sizeof(floatobject), + 0, + free, /*tp_dealloc*/ + float_print, /*tp_print*/ + 0, /*tp_getattr*/ + 0, /*tp_setattr*/ + float_compare, /*tp_compare*/ + float_repr, /*tp_repr*/ + &float_as_number, /*tp_as_number*/ + 0, /*tp_as_sequence*/ + 0, /*tp_as_mapping*/ }; /* -XXX This is not enough. Need: +XXX This is not enough. Need: - automatic casts for mixed arithmetic (3.1 * 4) - mixed comparisons (!) - look at other uses of ints that could be extended to floats |
