(7.5.1) The values returned by the mathematics functions on domain errors:
Table B-7 Values Returned on Domain Errors|
Error |
Math Functions |
Compiler Modes |
|
|---|---|---|---|
|
-Xs, -Xt |
-Xa, -Xc |
||
| DOMAIN | acos(|x|>1) | 0.0 | 0.0 |
| DOMAIN | asin(|x|>1) | 0.0 | 0.0 |
| DOMAIN | atan2(+-0,+-0) | 0.0 | 0.0 |
| DOMAIN | y0(0) | -HUGE | -HUGE_VAL |
| DOMAIN | y0(x<0) | -HUGE | -HUGE_VAL |
| DOMAIN | y1(0) | -HUGE | -HUGE_VAL |
| DOMAIN | y1(x<0) | -HUGE | -HUGE_VAL |
| DOMAIN | yn(n,0) | -HUGE | -HUGE_VAL |
| DOMAIN | yn(n,x<0) | -HUGE | -HUGE_VAL |
| DOMAIN | log(x<0) | -HUGE | -HUGE_VAL |
| DOMAIN | log10(x<0) | -HUGE | -HUGE_VAL |
| DOMAIN | pow(0,0) | 0.0 | 1.0 |
| DOMAIN | pow(0,neg) | 0.0 | -HUGE_VAL |
| DOMAIN | pow(neg,non-integal) | 0.0 | NaN |
| DOMAIN | sqrt(x<0) | 0.0 | NaN |
| DOMAIN | fmod(x,0) | x | NaN |
| DOMAIN | remainder(x,0) | NaN | NaN |
| DOMAIN | acosh(x<1) | NaN | NaN |
| DOMAIN | atanh(|x|>1) | NaN | NaN |
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