diff options
Diffstat (limited to 'math.c')
-rw-r--r-- | math.c | 53 |
1 files changed, 29 insertions, 24 deletions
@@ -22,6 +22,27 @@ VALUE rb_mMath; Need_Float(y);\ } while (0) +static void +domain_check(x, msg) + double x; + char *msg; +{ + while(1) { + if (errno) { + rb_sys_fail(msg); + } + if (isnan(x)) { +#if defined(EDOM) + errno = EDOM; +#elif define(ERANGE) + errno = ERANGE; +#endif + continue; + } + break; + } +} + /* * call-seq: @@ -41,7 +62,6 @@ math_atan2(obj, y, x) } - /* * call-seq: * Math.cos(x) => float @@ -108,9 +128,7 @@ math_acos(obj, x) Need_Float(x); errno = 0; d = acos(RFLOAT(x)->value); - if (errno) { - rb_sys_fail("acos"); - } + domain_check(d, "acos"); return rb_float_new(d); } @@ -130,9 +148,7 @@ math_asin(obj, x) Need_Float(x); errno = 0; d = asin(RFLOAT(x)->value); - if (errno) { - rb_sys_fail("asin"); - } + domain_check(d, "asin"); return rb_float_new(d); } @@ -242,9 +258,7 @@ math_acosh(obj, x) Need_Float(x); errno = 0; d = acosh(RFLOAT(x)->value); - if (errno) { - rb_sys_fail("acosh"); - } + domain_check(d, "acosh"); return rb_float_new(d); } @@ -279,9 +293,7 @@ math_atanh(obj, x) Need_Float(x); errno = 0; d = atanh(RFLOAT(x)->value); - if (errno) { - rb_sys_fail("atanh"); - } + domain_check(d, "atanh"); return rb_float_new(d); } @@ -325,9 +337,7 @@ math_log(obj, x) Need_Float(x); errno = 0; d = log(RFLOAT(x)->value); - if (errno) { - rb_sys_fail("log"); - } + domain_check(d, "log"); return rb_float_new(d); } @@ -347,9 +357,7 @@ math_log10(obj, x) Need_Float(x); errno = 0; d = log10(RFLOAT(x)->value); - if (errno) { - rb_sys_fail("log10"); - } + domain_check(d, "log10"); return rb_float_new(d); } @@ -357,8 +365,7 @@ math_log10(obj, x) * call-seq: * Math.sqrt(numeric) => float * - * Returns the non-negative square root of <i>numeric</i>. Raises - * <code>ArgError</code> if <i>numeric</i> is less than zero. + * Returns the non-negative square root of <i>numeric</i>. */ static VALUE @@ -370,9 +377,7 @@ math_sqrt(obj, x) Need_Float(x); errno = 0; d = sqrt(RFLOAT(x)->value); - if (errno) { - rb_sys_fail("sqrt"); - } + domain_check(d, "sqrt"); return rb_float_new(d); } |