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[0] def factor(A) { return fctr(A); }
[1] factor(x^5-1,3);
evalf : argument mismatch in factor()
return to toplevel

ÉÔÄê¸Ä°ú¿ô¤Î´Ø¿ô¤ò¥æ¡¼¥¶¸À¸ì¤Çµ­½Ò¤·¤¿¤¤¾ì¹ç, ¥ê¥¹¥È, ÇÛÎó¤òÍѤ¤¤ë¤³¤È¤Ç ²Äǽ¤È¤Ê¤ë¤¬, ¼¡¤Î¤è¤¦¤Ê¤è¤êʬ¤«¤ê¤ä¤¹¤¤ÊýË¡¤â²Äǽ¤Ç¤¢¤ë.

% cat factor
def factor(F)
{
    Mod = getopt(mod);
    ModType = type(Mod);
    if ( ModType == 1 ) /* 'mod' is not specified. */   
        return fctr(F);
    else if ( ModType == 0 ) /* 'mod' is a number */
        return modfctr(F,Mod);
}  

[0] load("factor")$
[1] factor(x^5-1);
[[1,1],[x-1,1],[x^4+x^3+x^2+x+1,1]]
[2] factor(x^5-1|mod=11);
[[1,1],[x+6,1],[x+2,1],[x+10,1],[x+7,1],[x+8,1]]

2 ÈÖÌܤΠfactor() ¤Î¸Æ¤Ó½Ð¤·¤Ë¤ª¤¤¤Æ, ´Ø¿ôÄêµÁ¤ÎºÝ¤ËÀë¸À¤µ¤ì¤¿°ú ¿ô x^5-1¤Î¸å¤í¤Ë |mod=11 ¤¬ÃÖ¤«¤ì¤Æ¤¤¤ë. ¤³¤ì¤Ï, ´Ø¿ô¼Â¹Ô»þ ¤Ë, mod ¤È¤¤¤¦ keyword ¤ËÂФ·¤Æ 11 ¤È¤¤¤¦Ãͤò³ä¤êÅö¤Æ¤ë¤³¤È ¤ò»ØÄꤷ¤Æ¤¤¤ë. ¤³¤ì¤ò¥ª¥×¥·¥ç¥ó»ØÄê¤È¸Æ¤Ö¤³¤È¤Ë¤¹¤ë. ¤³¤ÎÃÍ¤Ï getopt(mod) ¤Ç¼è¤ê½Ð¤¹¤³¤È¤¬¤Ç¤­¤ë. 1 ÈÖÌܤθƤӽФ·¤Î¤è¤¦¤Ë mod ¤ËÂФ¹¤ë¥ª¥×¥·¥ç¥ó»ØÄ꤬¤Ê¤¤¾ì¹ç¤Ë¤Ï, getopt(mod) ¤Ï·¿ ¼±ÊÌ»Ò -1 ¤Î¥ª¥Ö¥¸¥§¥¯¥È¤òÊÖ¤¹. ¤³¤ì¤Ë¤è¤ê, »ØÄ꤬¤Ê¤¤¾ì¹ç¤ÎÆ°ºî¤ò if ʸ ¤Ë¤è¤êµ­½Ò¤Ç¤­¤ë. `|' ¤Î¸å¤í¤Ë¤Ï, Ǥ°Õ¸Ä¤Î¥ª¥×¥·¥ç¥ó¤ò, `,' ¤Ç¶èÀڤäƻØÄꤹ¤ë¤³¤È¤¬¤Ç¤­¤ë.

[100] xxx(1,2,x^2-1,[1,2,3]|proc=1,index=5);

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