-double atan (double __x);
-double atan2 (double __y, double __x);
-double ceil (double __x);
-double cos (double __x);
-double fabs (double __x);
-double floor (double __x);
-long _ftol (double fl);
-double log (double __x);
-double __log2 (double __x);
-double pow (double __x, double __y);
-double sin (double __x);
-double sqrt (double __x);
-double tan (double __x);
-div_t div(int num, int denom);
-int mod(int num, int denom);
-
-double atan (double __x)
-{
- register double __value;
- __asm __volatile__
- ("fld1\n\t"
- "fpatan"
- : "=t" (__value) : "0" (__x));
-
- return __value;
-}
-
-double atan2 (double __y, double __x)
-{
- register double __value;
- __asm __volatile__
- ("fpatan\n\t"
- "fld %%st(0)"
- : "=t" (__value) : "0" (__x), "u" (__y));
-
- return __value;
-}
-
-double ceil (double __x)
-{
- register double __value;
- __volatile unsigned short int __cw, __cwtmp;
-
- __asm __volatile ("fnstcw %0" : "=m" (__cw));
- __cwtmp = (__cw & 0xf3ff) | 0x0800; /* rounding up */
- __asm __volatile ("fldcw %0" : : "m" (__cwtmp));
- __asm __volatile ("frndint" : "=t" (__value) : "0" (__x));
- __asm __volatile ("fldcw %0" : : "m" (__cw));
-
- return __value;
-}
-
-double cos (double __x)
-{
- register double __value;
- __asm __volatile__
- ("fcos"
- : "=t" (__value): "0" (__x));
-
- return __value;
-}
-
-double fabs (double __x)
-{
- register double __value;
- __asm __volatile__
- ("fabs"
- : "=t" (__value) : "0" (__x));
-
- return __value;
-}
-
-double floor (double __x)
-{
- register double __value;
- __volatile unsigned short int __cw, __cwtmp;
-
- __asm __volatile ("fnstcw %0" : "=m" (__cw));
- __cwtmp = (__cw & 0xf3ff) | 0x0400; /* rounding down */
- __asm __volatile ("fldcw %0" : : "m" (__cwtmp));
- __asm __volatile ("frndint" : "=t" (__value) : "0" (__x));
- __asm __volatile ("fldcw %0" : : "m" (__cw));
-
- return __value;
-}
-
-long _ftol (double fl)
-{
- return (long)fl;
-}
-
-double log (double __x)
-{
- register double __value;
- __asm __volatile__
- ("fldln2\n\t"
- "fxch\n\t"
- "fyl2x"
- : "=t" (__value) : "0" (__x));
-
- return __value;
-}
-
-double __log2 (double __x)
-{
- register double __value;
- __asm __volatile__
- ("fld1\n\t"
- "fxch\n\t"
- "fyl2x"
- : "=t" (__value) : "0" (__x));
-
- return __value;
-}
-
-double pow (double __x, double __y)
-{
- register double __value, __exponent;
- long __p = (long) __y;
-
- if (__x == 0.0 && __y > 0.0)
- return 0.0;
- if (__y == (double) __p)
- {
- double __r = 1.0;
- if (__p == 0)
- return 1.0;
- if (__p < 0)
- {
- __p = -__p;
- __x = 1.0 / __x;
- }
- while (1)
- {
- if (__p & 1)
- __r *= __x;
- __p >>= 1;
- if (__p == 0)
- return __r;
- __x *= __x;
- }
- /* NOTREACHED */
- }
- __asm __volatile__
- ("fmul %%st(1) # y * log2(x)\n\t"
- "fst %%st(1)\n\t"
- "frndint # int(y * log2(x))\n\t"
- "fxch\n\t"
- "fsub %%st(1) # fract(y * log2(x))\n\t"
- "f2xm1 # 2^(fract(y * log2(x))) - 1\n\t"
- : "=t" (__value), "=u" (__exponent) : "0" (__log2 (__x)), "1" (__y));
- __value += 1.0;
- __asm __volatile__
- ("fscale"
- : "=t" (__value) : "0" (__value), "u" (__exponent));
-
- return __value;
-}
-
-double sin (double __x)
-{
- register double __value;
- __asm __volatile__
- ("fsin"
- : "=t" (__value) : "0" (__x));
-
- return __value;
-}
-
-double sqrt (double __x)
-{
- register double __value;
- __asm __volatile__
- ("fsqrt"
- : "=t" (__value) : "0" (__x));
-
- return __value;
-}
-
-double tan (double __x)
-{
- register double __value;
- register double __value2 __attribute__ ((unused));
- __asm __volatile__
- ("fptan"
- : "=t" (__value2), "=u" (__value) : "0" (__x));
-
- return __value;
-}
-
-div_t div(int num, int denom)
-{
- div_t r;
- if (num > 0 && denom < 0) {
- num = -num;
- denom = -denom;
- }
- r.quot = num / denom;
- r.rem = num % denom;
- if (num < 0 && denom > 0)
- {
- if (r.rem > 0)
- {
- r.quot++;
- r.rem -= denom;
- }
- }
- return r;
-}
-
-int mod(int num, int denom)
-{
- div_t dvt = div(num, denom);
- return dvt.rem;
-}
-
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