backported more fixes from 256boss

[bootcensus] / src / libc / math.h

diff --git a/src/libc/math.h b/src/libc/math.h
new file mode 100644 (file)
index 0000000..e3b0f23
--- /dev/null
+++ b/src/libc/math.h
@@ -0,0 +1,36 @@
+/*
+pcboot - bootable PC demo/game kernel
+Copyright (C) 2018-2019  John Tsiombikas <nuclear@member.fsf.org>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY, without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+#ifndef MATH_H_
+#define MATH_H_
+
+#define INFINITY       __builtin_inff()
+#define NAN                    __builtin_nanf
+
+#define M_PI           3.141592653589793
+
+#define sin(x)         __builtin_sin(x)
+#define cos(x)         __builtin_cos(x)
+#define tan(x)         __builtin_tan(x)
+#define fabs(x)                __builtin_fabs(x)
+#define fmod(x, y)     __builtin_fmod(x, y)
+#define sqrt(x)                __builtin_sqrt(x)
+#define atan2(y, x)    __builtin_atan2(y, x)
+
+double pow(double x, double y);
+
+#endif /* MATH_H_ */