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log should promote to complex logic for negative inputs.

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Fixes issue #166.
This commit is contained in:
Alex Shinn 2012-12-26 07:25:22 +09:00
parent 3c45fb564a
commit bd3eec54d7
1 changed files with 28 additions and 1 deletions
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29
eval.c
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@ -1308,7 +1308,6 @@ sexp sexp_register_optimization (sexp ctx, sexp self, sexp_sint_t n, sexp f, sex
}
define_math_op(sexp_exp, exp, sexp_complex_exp)
define_math_op(sexp_log, log, sexp_complex_log)
define_math_op(sexp_sin, sin, sexp_complex_sin)
define_math_op(sexp_cos, cos, sexp_complex_cos)
define_math_op(sexp_tan, tan, sexp_complex_tan)
@ -1345,6 +1344,34 @@ define_math_rounder(sexp_trunc, trunc, sexp_ratio_trunc)
define_math_rounder(sexp_floor, floor, sexp_ratio_floor)
define_math_rounder(sexp_ceiling, ceil, sexp_ratio_ceiling)
sexp sexp_log (sexp ctx, sexp self, sexp_sint_t n, sexp z) {
double d;
#if SEXP_USE_COMPLEX
sexp_gc_var1(tmp);
if (sexp_complexp(z))
return sexp_complex_log(ctx, z);
#endif
if (sexp_flonump(z))
d = sexp_flonum_value(z);
else if (sexp_fixnump(z))
d = (double)sexp_unbox_fixnum(z);
maybe_convert_ratio(z)
maybe_convert_bignum(z)
else
return sexp_type_exception(ctx, self, SEXP_NUMBER, z);
#if SEXP_USE_COMPLEX
if (d < 0) {
sexp_gc_preserve1(ctx, tmp);
tmp = sexp_make_flonum(ctx, d);
tmp = sexp_make_complex(ctx, tmp, SEXP_ZERO);
tmp = sexp_complex_log(ctx, tmp);
sexp_gc_release1(ctx);
return tmp;
}
#endif
return sexp_make_flonum(ctx, log(d));
}
sexp sexp_sqrt (sexp ctx, sexp self, sexp_sint_t n, sexp z) {
#if SEXP_USE_COMPLEX
int negativep = 0;