diff options
Diffstat (limited to 'libquadmath/math/expq.c')
| -rw-r--r-- | libquadmath/math/expq.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/libquadmath/math/expq.c b/libquadmath/math/expq.c index 2740b4e2cc9..70c638d7a08 100644 --- a/libquadmath/math/expq.c +++ b/libquadmath/math/expq.c @@ -30,19 +30,19 @@ #endif -/* __expl_table basically consists of four tables, T_EXPL_ARG{1,2} and +/* __expq_table basically consists of four tables, T_EXPL_ARG{1,2} and T_EXPL_RES{1,2}. All tables use positive and negative indexes, the 0 points are marked by T_EXPL_* defines. For ARG1 and RES1 tables lets B be 89 and S 256.0, for ARG2 and RES2 B is 65 and S 32768.0. These table have the property that, for all integers -B <= i <= B - expl(__expl_table[T_EXPL_ARGN+2*i]+__expl_table[T_EXPL_ARGN+2*i+1]+r) == - __expl_table[T_EXPL_RESN+i], __expl_table[T_EXPL_RESN+i] is some exact number + expl(__expq_table[T_EXPL_ARGN+2*i]+__expq_table[T_EXPL_ARGN+2*i+1]+r) == + __expq_table[T_EXPL_RESN+i], __expq_table[T_EXPL_RESN+i] is some exact number with the low 58 bits of the mantissa 0, - __expl_table[T_EXPL_ARGN+2*i] == i/S+s + __expq_table[T_EXPL_ARGN+2*i] == i/S+s where absl(s) <= 2^-54 and absl(r) <= 2^-212. */ -static const __float128 __expl_table [] = { +static const __float128 __expq_table [] = { -3.47656250000000000584188889839535373E-01Q, /* bffd640000000000002b1b04213cf000 */ 6.90417668990715641167244540876988960E-32Q, /* 3f97667c3fdb588a6ae1af8748357a17 */ -3.43749999999999981853132895957607418E-01Q, /* bffd5ffffffffffffac4ff5f4050b000 */ @@ -1122,8 +1122,8 @@ expq (__float128 x) /* Compute tval1 = t. */ tval1 = (int) (t * TWO8); - x -= __expl_table[T_EXPL_ARG1+2*tval1]; - xl -= __expl_table[T_EXPL_ARG1+2*tval1+1]; + x -= __expq_table[T_EXPL_ARG1+2*tval1]; + xl -= __expq_table[T_EXPL_ARG1+2*tval1+1]; /* Calculate t/32768. */ t = x + THREEp96; @@ -1132,14 +1132,14 @@ expq (__float128 x) /* Compute tval2 = t. */ tval2 = (int) (t * TWO15); - x -= __expl_table[T_EXPL_ARG2+2*tval2]; - xl -= __expl_table[T_EXPL_ARG2+2*tval2+1]; + x -= __expq_table[T_EXPL_ARG2+2*tval2]; + xl -= __expq_table[T_EXPL_ARG2+2*tval2+1]; x = x + xl; /* Compute ex2 = 2^n_0 e^(argtable[tval1]) e^(argtable[tval2]). */ - ex2_u.value = __expl_table[T_EXPL_RES1 + tval1] - * __expl_table[T_EXPL_RES2 + tval2]; + ex2_u.value = __expq_table[T_EXPL_RES1 + tval1] + * __expq_table[T_EXPL_RES2 + tval2]; n_i = (int)n; /* 'unsafe' is 1 iff n_1 != 0. */ unsafe = abs(n_i) >= -FLT128_MIN_EXP - 1; |