1 files changed, 0 insertions, 92 deletions
diff --git a/trunk/missing/tgamma.c b/trunk/missing/tgamma.c
deleted file mode 100644
index 5e306fbb43..0000000000
--- a/trunk/missing/tgamma.c
+++ /dev/null
@@ -1,92 +0,0 @@
-/* tgamma.c  - public domain implementation of function tgamma(3m)
-
-reference - Haruhiko Okumura: C-gengo niyoru saishin algorithm jiten
-            (New Algorithm handbook in C language) (Gijyutsu hyouron
-            sha, Tokyo, 1991) [in Japanese]
-            http://oku.edu.mie-u.ac.jp/~okumura/algo/
-*/
-
-/***********************************************************
-    gamma.c -- Gamma function
-***********************************************************/
-#include "ruby/config.h"
-#include <math.h>
-#include <errno.h>
-
-#ifdef HAVE_LGAMMA_R
-
-double tgamma(double x)
-{
-    int sign;
-    double d;
-    if (x == 0.0) { /* Pole Error */
-        errno = ERANGE;
-        return 1/x < 0 ? -HUGE_VAL : HUGE_VAL;
-    }
-    if (x < 0) {
-        static double zero = 0.0;
-        double i, f;
-        f = modf(-x, &i);
-        if (f == 0.0) { /* Domain Error */
-            errno = EDOM;
-            return zero/zero;
-        }
-    }
-    d = lgamma_r(x, &sign);
-    return sign * exp(d);
-}
-
-#else
-
-#include <errno.h>
-#define PI      3.14159265358979324  /* $\pi$ */
-#define LOG_2PI 1.83787706640934548  /* $\log 2\pi$ */
-#define N       8
-
-#define B0  1                 /* Bernoulli numbers */
-#define B1  (-1.0 / 2.0)
-#define B2  ( 1.0 / 6.0)
-#define B4  (-1.0 / 30.0)
-#define B6  ( 1.0 / 42.0)
-#define B8  (-1.0 / 30.0)
-#define B10 ( 5.0 / 66.0)
-#define B12 (-691.0 / 2730.0)
-#define B14 ( 7.0 / 6.0)
-#define B16 (-3617.0 / 510.0)
-
-static double
-loggamma(double x)  /* the natural logarithm of the Gamma function. */
-{
-    double v, w;
-
-    v = 1;
-    while (x < N) {  v *= x;  x++;  }
-    w = 1 / (x * x);
-    return ((((((((B16 / (16 * 15))  * w + (B14 / (14 * 13))) * w
-                + (B12 / (12 * 11))) * w + (B10 / (10 *  9))) * w
-                + (B8  / ( 8 *  7))) * w + (B6  / ( 6 *  5))) * w
-                + (B4  / ( 4 *  3))) * w + (B2  / ( 2 *  1))) / x
-                + 0.5 * LOG_2PI - log(v) - x + (x - 0.5) * log(x);
-}
-
-double tgamma(double x)  /* Gamma function */
-{
-    if (x == 0.0) { /* Pole Error */
-        errno = ERANGE;
-        return 1/x < 0 ? -HUGE_VAL : HUGE_VAL;
-    }
-    if (x < 0) {
-        int sign;
-        static double zero = 0.0;
-        double i, f;
-        f = modf(-x, &i);
-        if (f == 0.0) { /* Domain Error */
-            errno = EDOM;
-            return zero/zero;
-        }
-        sign = (fmod(i, 2.0) != 0.0) ? 1 : -1;
-        return sign * PI / (sin(PI * f) * exp(loggamma(1 - x)));
-    }
-    return exp(loggamma(x));
-}
-#endif