Re: [PHP-DEV] Re: [PHP-CVS] cvs: php4 /ext/bcmath bcmath.c php_bcmath.h

[Marcus Börger]

At 21:47 10.12.2002, Andi Gutmans wrote:

I think this is one of those exceptions where we should probably not go by our standard and call the function bcpowmod(). It looks a bit funny that all of the BC functions don't have underscores but only one does. It'll probably confuse people more than it helps.
What do you guys think?
Andi

Perhaps we make all old function names an alias and have all new ones with an underscrore.

If we do so for all modules we can add a configure setting to disallow deprecated old function
names.

If we don't do this i agree to Andi and would favor bcpowmod().

marcus

At 07:04 PM 12/10/2002 +0000, Sara Golemon wrote:

pollita Tue Dec 10 14:04:29 2002 EDT

Modified files:
/php4/ext/bcmath bcmath.c php_bcmath.h
Log:
Added support for libbcmath's bc_raisemod function as bc_powmod()


Index: php4/ext/bcmath/bcmath.c
diff -u php4/ext/bcmath/bcmath.c:1.43 php4/ext/bcmath/bcmath.c:1.44
--- php4/ext/bcmath/bcmath.c:1.43 Thu Dec 5 16:51:45 2002
+++ php4/ext/bcmath/bcmath.c Tue Dec 10 14:04:27 2002
@@ -16,7 +16,7 @@
+----------------------------------------------------------------------+
*/

-/* $Id: bcmath.c,v 1.43 2002/12/05 21:51:45 helly Exp $ */
+/* $Id: bcmath.c,v 1.44 2002/12/10 19:04:27 pollita Exp $ */

#ifdef HAVE_CONFIG_H
#include "config.h"
@@ -42,6 +42,7 @@
PHP_FE(bcsqrt, NULL)
PHP_FE(bcscale, NULL)
PHP_FE(bccomp, NULL)
+ PHP_FE(bc_powmod, NULL)
{NULL, NULL, NULL}
};

@@ -324,6 +325,38 @@
}
bc_free_num(&first);
bc_free_num(&second);
+ bc_free_num(&result);
+ return;
+}
+/* }}} */
+
+/* {{{ proto string bc_powmod(string x, string y, string mod [, int scale])
+ Returns the value of an arbitrary precision number raised to the power of another reduced by a modulous */
+PHP_FUNCTION(bc_powmod)
+{
+ char *left, *right, *modulous;
+ int left_len, right_len, modulous_len;
+ bc_num first, second, mod, result;
+ int scale=bc_precision;
+
+ if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_C, "sss|l", &left, &left_len, &right, &right_len, &modulous, &modulous_len, &scale) == FAILURE) {
+ WRONG_PARAM_COUNT;
+ }
+
+ bc_init_num(&first TSRMLS_CC);
+ bc_init_num(&second TSRMLS_CC);
+ bc_init_num(&mod TSRMLS_CC);
+ bc_init_num(&result TSRMLS_CC);
+ bc_str2num(&first, left, scale TSRMLS_CC);
+ bc_str2num(&second, right, scale TSRMLS_CC);
+ bc_str2num(&mod, modulous, scale TSRMLS_CC);
+ bc_raisemod(first, second, mod, &result, scale TSRMLS_CC);
+ Z_STRVAL_P(return_value) = bc_num2str(result);
+ Z_STRLEN_P(return_value) = strlen(Z_STRVAL_P(return_value));
+ Z_TYPE_P(return_value) = IS_STRING;
+ bc_free_num(&first);
+ bc_free_num(&second);
+ bc_free_num(&mod);
bc_free_num(&result);
return;
}
Index: php4/ext/bcmath/php_bcmath.h
diff -u php4/ext/bcmath/php_bcmath.h:1.12 php4/ext/bcmath/php_bcmath.h:1.13
--- php4/ext/bcmath/php_bcmath.h:1.12 Fri Nov 22 04:25:28 2002
+++ php4/ext/bcmath/php_bcmath.h Tue Dec 10 14:04:27 2002
@@ -16,7 +16,7 @@
+----------------------------------------------------------------------+
*/

-/* $Id: php_bcmath.h,v 1.12 2002/11/22 09:25:28 sander Exp $ */
+/* $Id: php_bcmath.h,v 1.13 2002/12/10 19:04:27 pollita Exp $ */

#ifndef PHP_BCMATH_H
#define PHP_BCMATH_H
@@ -60,6 +60,7 @@
PHP_FUNCTION(bcsqrt);
PHP_FUNCTION(bccomp);
PHP_FUNCTION(bcscale);
+PHP_FUNCTION(bc_powmod);

#else




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