(7.5.1) The values returned by the mathematics functions on domain errors:
Table E–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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