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msvcrt: Set ERANGE in exp functions on finite input and infinite output. 

Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alex Henrie 2017-07-25 00:52:27 -06:00 committed by Alexandre Julliard
parent cfb1f130fd
commit 79c3b610c4
1 changed files with 19 additions and 13 deletions
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32
dlls/msvcrt/math.c
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@ -209,8 +209,10 @@ float CDECL MSVCRT_coshf( float x )
*/
float CDECL MSVCRT_expf( float x )
{
if (!finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
return expf(x);
float ret = expf(x);
if (isnanf(x)) *MSVCRT__errno() = MSVCRT_EDOM;
else if (finitef(x) && !finitef(ret)) *MSVCRT__errno() = MSVCRT_ERANGE;
return ret;
}
/*********************************************************************
@ -404,8 +406,10 @@ double CDECL MSVCRT_cosh( double x )
*/
double CDECL MSVCRT_exp( double x )
{
double ret = exp(x);
if (isnan(x)) *MSVCRT__errno() = MSVCRT_EDOM;
return exp(x);
else if (isfinite(x) && !isfinite(ret)) *MSVCRT__errno() = MSVCRT_ERANGE;
return ret;
}
/*********************************************************************
@ -984,7 +988,7 @@ double CDECL MSVCRT_ldexp(double num, MSVCRT_long exp)
{
double z = ldexp(num,exp);
if (!isfinite(z))
if (isfinite(num) && !isfinite(z))
*MSVCRT__errno() = MSVCRT_ERANGE;
else if (z == 0 && signbit(z))
z = 0.0; /* Convert -0 -> +0 */
@ -2385,10 +2389,12 @@ LDOUBLE CDECL MSVCR120_cbrtl(LDOUBLE x)
double CDECL MSVCR120_exp2(double x)
{
#ifdef HAVE_EXP2
return exp2(x);
double ret = exp2(x);
#else
return pow(2, x);
double ret = pow(2, x);
#endif
if (isfinite(x) && !isfinite(ret)) *MSVCRT__errno() = MSVCRT_ERANGE;
return ret;
}
/*********************************************************************
@ -2397,7 +2403,9 @@ double CDECL MSVCR120_exp2(double x)
float CDECL MSVCR120_exp2f(float x)
{
#ifdef HAVE_EXP2F
return exp2f(x);
float ret = exp2f(x);
if (finitef(x) && !finitef(ret)) *MSVCRT__errno() = MSVCRT_ERANGE;
return ret;
#else
return MSVCR120_exp2(x);
#endif
@ -2421,7 +2429,7 @@ double CDECL MSVCR120_expm1(double x)
#else
double ret = exp(x) - 1;
#endif
if (!isfinite(ret)) *MSVCRT__errno() = MSVCRT_ERANGE;
if (isfinite(x) && !isfinite(ret)) *MSVCRT__errno() = MSVCRT_ERANGE;
return ret;
}
@ -2435,7 +2443,7 @@ float CDECL MSVCR120_expm1f(float x)
#else
float ret = exp(x) - 1;
#endif
if (!finitef(ret)) *MSVCRT__errno() = MSVCRT_ERANGE;
if (finitef(x) && !finitef(ret)) *MSVCRT__errno() = MSVCRT_ERANGE;
return ret;
}
@ -3124,8 +3132,7 @@ LDOUBLE CDECL MSVCR120_atanhl(LDOUBLE x)
*/
double CDECL MSVCRT__scalb(double num, MSVCRT_long power)
{
if (!isfinite(num)) *MSVCRT__errno() = MSVCRT_EDOM;
return ldexp(num, power);
return MSVCRT_ldexp(num, power);
}
/*********************************************************************
@ -3135,8 +3142,7 @@ double CDECL MSVCRT__scalb(double num, MSVCRT_long power)
*/
float CDECL MSVCRT__scalbf(float num, MSVCRT_long power)
{
if (!finitef(num)) *MSVCRT__errno() = MSVCRT_EDOM;
return ldexpf(num, power);
return MSVCRT_ldexp(num, power);
}
/*********************************************************************