grammar updates

[mono.git] / mono / metadata / sysmath.c

diff --git a/mono/metadata/sysmath.c b/mono/metadata/sysmath.c
index 297737ddd69f81eee2c6df0f4c62e1da47184a01..ed23f18f7d2d475a0c53e471e426fedb4693d514 100644 (file)
--- a/mono/metadata/sysmath.c
+++ b/mono/metadata/sysmath.c
@@ -29,6 +29,45 @@ static __huge_val_t __huge_val = { __HUGE_VAL_bytes };
 #  define HUGE_VAL      (__huge_val.__d)\r
 #endif\r
 \r
+\r
+gdouble ves_icall_System_Math_Floor (gdouble x) {\r
+       MONO_ARCH_SAVE_REGS;\r
+       return floor(x);\r
+}\r
+\r
+gdouble ves_icall_System_Math_Round (gdouble x) {\r
+       double int_part, dec_part;\r
+       MONO_ARCH_SAVE_REGS;\r
+       int_part = floor(x);\r
+       dec_part = x - int_part;\r
+       if (((dec_part == 0.5) &&\r
+               ((2.0 * ((int_part / 2.0) - floor(int_part / 2.0))) != 0.0)) ||\r
+               (dec_part > 0.5)) {\r
+               int_part++;\r
+       }\r
+       return int_part;\r
+}\r
+\r
+gdouble ves_icall_System_Math_Round2 (gdouble value, gint32 digits) {\r
+       double p, int_part, dec_part;\r
+       MONO_ARCH_SAVE_REGS;\r
+       if (value == HUGE_VAL)\r
+               return HUGE_VAL;\r
+       if (value == -HUGE_VAL)\r
+               return -HUGE_VAL;\r
+       if (digits == 0)\r
+               return ves_icall_System_Math_Round(value);\r
+       p = pow(10, digits);\r
+       int_part = floor(value);\r
+       dec_part = value - int_part;\r
+       dec_part *= 1000000000000000;\r
+       dec_part = floor(dec_part);\r
+       dec_part /= (1000000000000000 / p);\r
+       dec_part = ves_icall_System_Math_Round(dec_part);\r
+       dec_part /= p;\r
+       return int_part + dec_part;\r
+}\r
+\r
 gdouble \r
 ves_icall_System_Math_Sin (gdouble x)\r
 {\r
@@ -110,9 +149,17 @@ ves_icall_System_Math_Atan (gdouble x)
 gdouble \r
 ves_icall_System_Math_Atan2 (gdouble y, gdouble x)\r
 {\r
+       double result;\r
        MONO_ARCH_SAVE_REGS;\r
 \r
-       return atan2 (y, x);\r
+       if ((y == HUGE_VAL && x == HUGE_VAL) ||\r
+               (y == HUGE_VAL && x == -HUGE_VAL) ||\r
+               (y == -HUGE_VAL && x == HUGE_VAL) ||\r
+               (y == -HUGE_VAL && x == -HUGE_VAL)) {\r
+               return NAN;\r
+       }\r
+       result = atan2 (y, x);\r
+       return (result == -0)? 0: result;\r
 }\r
 \r
 gdouble \r
@@ -152,9 +199,37 @@ ves_icall_System_Math_Log10 (gdouble x)
 gdouble \r
 ves_icall_System_Math_Pow (gdouble x, gdouble y)\r
 {\r
+       double result;\r
        MONO_ARCH_SAVE_REGS;\r
 \r
-       return pow (x, y);\r
+       if (isnan(x) || isnan(y)) {\r
+               return NAN;\r
+       }\r
+\r
+       if ((x == 1 || x == -1) && (y == HUGE_VAL || y == -HUGE_VAL)) {\r
+               return NAN;\r
+       }\r
+\r
+       /* This code is for return the same results as MS.NET for certain\r
+        * limit values */\r
+       if (x < -9007199254740991.0) {\r
+               if (y > 9007199254740991.0)\r
+                       return HUGE_VAL;\r
+               if (y < -9007199254740991.0)\r
+                       return 0;\r
+       }\r
+\r
+       result = pow (x, y);\r
+\r
+       /* This code is for return the same results as MS.NET for certain\r
+        * limit values */\r
+       if (isnan(result) &&\r
+               (x == -1.0) &&\r
+               ((y > 9007199254740991.0) || (y < -9007199254740991.0))) {\r
+               return 1;\r
+       }\r
+\r
+       return (result == -0)? 0: result;\r
 }\r
 \r
 gdouble \r