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54318: mathfunc: add isnan() and isinf(). also document NaN + Inf

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dana
2026-04-13 11:04:58 -05:00
parent 08e48ea8b6
commit bfb982d682
7 changed files with 59 additions and 3 deletions
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14
Src/Modules/mathfunc.c
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@@ -57,6 +57,8 @@ MF_GAMMA,
MF_HYPOT,
MF_ILOGB,
MF_INT,
MF_ISINF,
MF_ISNAN,
MF_J0,
MF_J1,
MF_JN,
@@ -135,6 +137,8 @@ static struct mathfunc mftab[] = {
NUMMATHFUNC("hypot", math_func, 2, 2, MF_HYPOT),
NUMMATHFUNC("ilogb", math_func, 1, 1, MF_ILOGB | TFLAG(TF_NOASS)),
NUMMATHFUNC("int", math_func, 1, 1, MF_INT | TFLAG(TF_NOASS)),
NUMMATHFUNC("isinf", math_func, 1, 1, MF_ISINF | TFLAG(TF_NOASS)),
NUMMATHFUNC("isnan", math_func, 1, 1, MF_ISNAN | TFLAG(TF_NOASS)),
NUMMATHFUNC("j0", math_func, 1, 1, MF_J0),
NUMMATHFUNC("j1", math_func, 1, 1, MF_J1),
NUMMATHFUNC("jn", math_func, 2, 2, MF_JN | TFLAG(TF_INT1)),
@@ -308,6 +312,16 @@ math_func(UNUSED(char *name), int argc, mnumber *argv, int id)
ret.u.l = (zlong)argd;
break;
case MF_ISINF:
ret.type = MN_INTEGER;
ret.u.l = (zlong) isinf(argd);
break;
case MF_ISNAN:
ret.type = MN_INTEGER;
ret.u.l = (zlong) isnan(argd);
break;
case MF_J0:
retd = j0(argd);
break;