int mpfr_y1 (mpfr_ptr res, mpfr_srcptr z, mpfr_rnd_t r) { return mpfr_yn (res, 1, z, r); }
int main (int argc, char *argv[]) { mpfr_t x, y; long n; mpfr_prec_t prec = 53; tests_start_mpfr (); mpfr_init (x); mpfr_init (y); if (argc != 1) { if (argc != 4) { printf ("Usage: tyn n x prec\n"); exit (1); } n = atoi (argv[1]); prec = atoi (argv[3]); mpfr_set_prec (x, prec); mpfr_set_prec (y, prec); mpfr_set_str (x, argv[2], 10, MPFR_RNDN); mpfr_yn (y, n, x, MPFR_RNDN); printf ("Y(%ld,", n); mpfr_out_str (stdout, 10, 0, x, MPFR_RNDN); printf (")="); mpfr_out_str (stdout, 10, 0, y, MPFR_RNDN); printf ("\n"); goto end; } /* special values */ mpfr_set_nan (x); mpfr_yn (y, 17, x, MPFR_RNDN); MPFR_ASSERTN(mpfr_nan_p (y)); mpfr_set_inf (x, 1); /* +Inf */ mpfr_yn (y, 17, x, MPFR_RNDN); MPFR_ASSERTN(mpfr_cmp_ui (y, 0) == 0 && MPFR_IS_POS (y)); mpfr_set_inf (x, -1); /* -Inf */ mpfr_yn (y, 17, x, MPFR_RNDN); MPFR_ASSERTN(mpfr_nan_p (y)); mpfr_set_ui (x, 0, MPFR_RNDN); /* +0 */ mpfr_yn (y, 0, x, MPFR_RNDN); MPFR_ASSERTN(mpfr_inf_p (y) && MPFR_IS_NEG (y)); /* y0(+0)=-Inf */ mpfr_yn (y, 17, x, MPFR_RNDN); MPFR_ASSERTN(mpfr_inf_p (y) && MPFR_IS_NEG (y)); /* y17(+0)=-Inf */ mpfr_yn (y, -17, x, MPFR_RNDN); MPFR_ASSERTN(mpfr_inf_p (y) && MPFR_IS_POS (y)); /* y(-17,+0)=+Inf */ mpfr_yn (y, -42, x, MPFR_RNDN); MPFR_ASSERTN(mpfr_inf_p (y) && MPFR_IS_NEG (y)); /* y(-42,+0)=-Inf */ mpfr_set_ui (x, 0, MPFR_RNDN); mpfr_neg (x, x, MPFR_RNDN); /* -0 */ mpfr_yn (y, 0, x, MPFR_RNDN); MPFR_ASSERTN(mpfr_inf_p (y) && MPFR_IS_NEG (y)); /* y0(-0)=-Inf */ mpfr_yn (y, 17, x, MPFR_RNDN); MPFR_ASSERTN(mpfr_inf_p (y) && MPFR_IS_NEG (y)); /* y17(-0)=-Inf */ mpfr_yn (y, -17, x, MPFR_RNDN); MPFR_ASSERTN(mpfr_inf_p (y) && MPFR_IS_POS (y)); /* y(-17,-0)=+Inf */ mpfr_yn (y, -42, x, MPFR_RNDN); MPFR_ASSERTN(mpfr_inf_p (y) && MPFR_IS_NEG (y)); /* y(-42,-0)=-Inf */ mpfr_set_prec (x, 53); mpfr_set_prec (y, 53); mpfr_set_ui (x, 1, MPFR_RNDN); mpfr_yn (y, 0, x, MPFR_RNDN); mpfr_set_str_binary (x, "0.00010110100110000000001000100110111100110101100011011111"); if (mpfr_cmp (x, y)) { printf ("Error in mpfr_yn for n=0, x=1, rnd=MPFR_RNDN\n"); printf ("Expected "); mpfr_dump (x); printf ("Got "); mpfr_dump (y); exit (1); } mpfr_set_ui (x, 1, MPFR_RNDN); mpfr_yn (y, 1, x, MPFR_RNDN); mpfr_set_str_binary (x, "-0.110001111111110110010000001111101011001101011100101"); if (mpfr_cmp (x, y)) { printf ("Error in mpfr_yn for n=1, x=1, rnd=MPFR_RNDN\n"); printf ("Expected "); mpfr_dump (x); printf ("Got "); mpfr_dump (y); exit (1); } mpfr_set_ui (x, 1, MPFR_RNDN); mpfr_yn (y, -1, x, MPFR_RNDN); mpfr_set_str_binary (x, "0.110001111111110110010000001111101011001101011100101"); if (mpfr_cmp (x, y)) { printf ("Error in mpfr_yn for n=-1, x=1, rnd=MPFR_RNDN\n"); printf ("Expected "); mpfr_dump (x); printf ("Got "); mpfr_dump (y); exit (1); } mpfr_set_ui (x, 1, MPFR_RNDN); mpfr_yn (y, 2, x, MPFR_RNDN); mpfr_set_str_binary (x, "-1.101001101001001100100010101001000101101000010010001"); if (mpfr_cmp (x, y)) { printf ("Error in mpfr_yn for n=2, x=1, rnd=MPFR_RNDN\n"); printf ("Expected "); mpfr_dump (x); printf ("Got "); mpfr_dump (y); exit (1); } mpfr_set_ui (x, 1, MPFR_RNDN); mpfr_yn (y, -2, x, MPFR_RNDN); mpfr_set_str_binary (x, "-1.101001101001001100100010101001000101101000010010001"); if (mpfr_cmp (x, y)) { printf ("Error in mpfr_yn for n=-2, x=1, rnd=MPFR_RNDN\n"); printf ("Expected "); mpfr_dump (x); printf ("Got "); mpfr_dump (y); exit (1); } mpfr_set_ui (x, 1, MPFR_RNDN); mpfr_yn (y, 17, x, MPFR_RNDN); mpfr_set_str_binary (x, "-0.11000100111000100010101101011000110011001101100001011E60"); if (mpfr_cmp (x, y)) { printf ("Error in mpfr_yn for n=17, x=1, rnd=MPFR_RNDN\n"); printf ("Expected "); mpfr_dump (x); printf ("Got "); mpfr_dump (y); exit (1); } mpfr_set_ui (x, 1, MPFR_RNDN); mpfr_yn (y, -17, x, MPFR_RNDN); mpfr_set_str_binary (x, "0.11000100111000100010101101011000110011001101100001011E60"); if (mpfr_cmp (x, y)) { printf ("Error in mpfr_yn for n=-17, x=1, rnd=MPFR_RNDN\n"); printf ("Expected "); mpfr_dump (x); printf ("Got "); mpfr_dump (y); exit (1); } mpfr_set_ui (x, 17, MPFR_RNDN); mpfr_yn (y, 1, x, MPFR_RNDN); mpfr_set_str_binary (x, "0.00101010110011011111001100000001101011011001111111"); if (mpfr_cmp (x, y)) { printf ("Error in mpfr_yn for n=1, x=17, rnd=MPFR_RNDN\n"); printf ("Expected "); mpfr_dump (x); printf ("Got "); mpfr_dump (y); exit (1); } end: mpfr_clear (x); mpfr_clear (y); tests_end_mpfr (); return 0; }
int mpfr_y0 (mpfr_ptr res, mpfr_srcptr z, mp_rnd_t r) { return mpfr_yn (res, 0, z, r); }