Ruby » Ruby master

* flt.inspect -> string

* Returns a string containing a full representation of self. As well as a

flo_inspect(VALUE flt)

* call-seq:

* flt.to_s => string

*

* Returns a string containing a human readable representation of self. As well as a

* fixed or exponential form of the number, the call may return

* ``<code>NaN</code>'', ``<code>Infinity</code>'', and

* ``<code>-Infinity</code>''.

*/

static VALUE

flo_to_s(VALUE flt)

{

char buf[32];

double value = RFLOAT_VALUE(flt);

char *p, *e;

if (isinf(value))

return rb_usascii_str_new2(value < 0 ? "-Infinity" : "Infinity");

else if(isnan(value))

return rb_usascii_str_new2("NaN");

snprintf(buf, sizeof(buf), "%#.15g", value); /* ensure to print decimal point */

if (!(e = strchr(buf, 'e'))) {

e = buf + strlen(buf);

}

if (!ISDIGIT(e[-1])) { /* reformat if ended with decimal point (ex 111111111111111.) */

snprintf(buf, sizeof(buf), "%#.14e", value);

if (!(e = strchr(buf, 'e'))) {

e = buf + strlen(buf);

}

}

p = e;

while (p[-1]=='0' && ISDIGIT(p[-2]))

p--;

memmove(p, e, strlen(e)+1);

return rb_usascii_str_new2(buf);

}

/*

rb_define_method(rb_cFloat, "inspect", flo_inspect, 0);