Initial Release

src/rp2_common/pico_double/include/pico/double.h

@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef _PICO_DOUBLE_H
+#define _PICO_DOUBLE_H
+
+#include <math.h>
+#include "pico/types.h"
+#include "pico/bootrom/sf_table.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** \file double.h
+*  \defgroup pico_double pico_double
+*
+* Optimized double-precision floating point functions
+*
+* (Replacement) optimized implementations are provided of the following compiler built-ins
+* and math library functions:
+*
+* - __aeabi_dadd, __aeabi_ddiv, __aeabi_dmul, __aeabi_drsub, __aeabi_dsub, __aeabi_cdcmpeq, __aeabi_cdrcmple, __aeabi_cdcmple, __aeabi_dcmpeq, __aeabi_dcmplt, __aeabi_dcmple, __aeabi_dcmpge, __aeabi_dcmpgt, __aeabi_dcmpun, __aeabi_i2d, __aeabi_l2d, __aeabi_ui2d, __aeabi_ul2d, __aeabi_d2iz, __aeabi_d2lz, __aeabi_d2uiz, __aeabi_d2ulz, __aeabi_d2f
+* - sqrt, cos, sin, tan, atan2, exp, log, ldexp, copysign, trunc, floor, ceil, round, asin, acos, atan, sinh, cosh, tanh, asinh, acosh, atanh, exp2, log2, exp10, log10, pow,, hypot, cbrt, fmod, drem, remainder, remquo, expm1, log1p, fma
+* - powint, sincos (GNU extensions)
+*
+* The following additional optimized functions are also provided:
+*
+* - fix2double, ufix2double, fix642double, ufix642double, double2fix, double2ufix, double2fix64, double2ufix64, double2int, double2int64, double2int_z, double2int64_z
+*/
+
+double fix2double(int32_t m, int e);
+double ufix2double(uint32_t m, int e);
+double fix642double(int64_t m, int e);
+double ufix642double(uint64_t m, int e);
+
+// These methods round towards -Infinity.
+int32_t double2fix(double f, int e);
+uint32_t double2ufix(double f, int e);
+int64_t double2fix64(double f, int e);
+uint64_t double2ufix64(double f, int e);
+int32_t double2int(double f);
+int64_t double2int64(double f);
+
+// These methods round towards 0.
+int32_t double2int_z(double f);
+int64_t double2int64_z(double f);
+
+double exp10(double x);
+void sincos(double x, double *sinx, double *cosx);
+double powint(double x, int y);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif