Changeset 658 for libcacaTweet

Timestamp:

Mar 22, 2006, 2:15:08 PM (15 years ago)

Author:

Sam Hocevar

Message:

• Got rid of cucul_powf(), too complex to implement and no longer used.

Location:

libcaca/trunk/cucul

Files:

• cucul.h (modified) (1 diff)
• math.c (modified) (2 diffs)

libcaca/trunk/cucul/cucul.h

@@ -177 +177 @@
 int cucul_rand(int, int);
 unsigned int cucul_sqrt(unsigned int);
-float cucul_powf(float x, float y);
 /*  @} */
 

libcaca/trunk/cucul/math.c

@@ -26 +26 @@
 #include "cucul.h"
 #include "cucul_internals.h"
+
+static float powf_internal(float x, float y);
 
 /**
@@ -71 +73 @@
 }
 
-/**
- * \brief powf substitute (x^y)
- * \param x The value to be raised
- * \param y The power to raise x to (only works with integers)
- * \return \p x raised to the power of \p y
- */
-float cucul_powf(float x, float y)
-{
-#ifdef __i386__
-    /* FIXME: this can be optimised by directly calling fyl2x for x and y */
-    register double logx;
-    register long double v, e;
-
-    asm volatile("fldln2; fxch; fyl2x"
-                 : "=t" (logx) : "0" (x) : "st(1)");
-
-    asm volatile("fldl2e\n\t"
-                 "fmul %%st(1)\n\t"
-                 "fst %%st(1)\n\t"
-                 "frndint\n\t"
-                 "fxch\n\t"
-                 "fsub %%st(1)\n\t"
-                 "f2xm1\n\t"
-                 : "=t" (v), "=u" (e) : "0" (y * logx));
-    v += 1.0;
-    asm volatile("fscale"
-                 : "=t" (v) : "0" (v), "u" (e));
-
-    return v;
-#else
-    return x; /* HAHAHA VIEUX PORC */
-#endif
-}