| OLD | NEW |
| 1 #include "libm.h" | 1 #include "libm.h" |
| 2 | 2 |
| 3 #if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024 | 3 #if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024 |
| 4 long double ceill(long double x) | 4 long double ceill(long double x) { |
| 5 { | 5 return ceil(x); |
| 6 » return ceil(x); | |
| 7 } | 6 } |
| 8 #elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384 | 7 #elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384 |
| 9 | 8 |
| 10 static const long double toint = 1/LDBL_EPSILON; | 9 static const long double toint = 1 / LDBL_EPSILON; |
| 11 | 10 |
| 12 long double ceill(long double x) | 11 long double ceill(long double x) { |
| 13 { | 12 union ldshape u = {x}; |
| 14 » union ldshape u = {x}; | 13 int e = u.i.se & 0x7fff; |
| 15 » int e = u.i.se & 0x7fff; | 14 long double y; |
| 16 » long double y; | |
| 17 | 15 |
| 18 » if (e >= 0x3fff+LDBL_MANT_DIG-1 || x == 0) | 16 if (e >= 0x3fff + LDBL_MANT_DIG - 1 || x == 0) |
| 19 » » return x; | 17 return x; |
| 20 » /* y = int(x) - x, where int(x) is an integer neighbor of x */ | 18 /* y = int(x) - x, where int(x) is an integer neighbor of x */ |
| 21 » if (u.i.se >> 15) | 19 if (u.i.se >> 15) |
| 22 » » y = x - toint + toint - x; | 20 y = x - toint + toint - x; |
| 23 » else | 21 else |
| 24 » » y = x + toint - toint - x; | 22 y = x + toint - toint - x; |
| 25 » /* special case because of non-nearest rounding modes */ | 23 /* special case because of non-nearest rounding modes */ |
| 26 » if (e <= 0x3fff-1) { | 24 if (e <= 0x3fff - 1) { |
| 27 » » FORCE_EVAL(y); | 25 FORCE_EVAL(y); |
| 28 » » return u.i.se >> 15 ? -0.0 : 1; | 26 return u.i.se >> 15 ? -0.0 : 1; |
| 29 » } | 27 } |
| 30 » if (y < 0) | 28 if (y < 0) |
| 31 » » return x + y + 1; | 29 return x + y + 1; |
| 32 » return x + y; | 30 return x + y; |
| 33 } | 31 } |
| 34 #endif | 32 #endif |
| OLD | NEW |