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authorchai <chaifix@163.com>2018-11-16 00:24:51 +0800
committerchai <chaifix@163.com>2018-11-16 00:24:51 +0800
commit831e814ce9bdb84e86c06c4a52008f6bdaaa00d6 (patch)
treef91fccc7d2628d6e0a39886134b2bb174f5eede4 /build/vc++/libs/LuaJIT-2.0.5/src/lj_vmmath.c
parent6dc75930fe5fe02f1af5489917752d315cf9e48f (diff)
*合并master到minimal分支
Diffstat (limited to 'build/vc++/libs/LuaJIT-2.0.5/src/lj_vmmath.c')
-rw-r--r--build/vc++/libs/LuaJIT-2.0.5/src/lj_vmmath.c140
1 files changed, 0 insertions, 140 deletions
diff --git a/build/vc++/libs/LuaJIT-2.0.5/src/lj_vmmath.c b/build/vc++/libs/LuaJIT-2.0.5/src/lj_vmmath.c
deleted file mode 100644
index 73fc667..0000000
--- a/build/vc++/libs/LuaJIT-2.0.5/src/lj_vmmath.c
+++ /dev/null
@@ -1,140 +0,0 @@
-/*
-** Math helper functions for assembler VM.
-** Copyright (C) 2005-2017 Mike Pall. See Copyright Notice in luajit.h
-*/
-
-#define lj_vmmath_c
-#define LUA_CORE
-
-#include <errno.h>
-#include <math.h>
-
-#include "lj_obj.h"
-#include "lj_ir.h"
-#include "lj_vm.h"
-
-/* -- Helper functions for generated machine code ------------------------- */
-
-#if LJ_TARGET_X86ORX64
-/* Wrapper functions to avoid linker issues on OSX. */
-LJ_FUNCA double lj_vm_sinh(double x) { return sinh(x); }
-LJ_FUNCA double lj_vm_cosh(double x) { return cosh(x); }
-LJ_FUNCA double lj_vm_tanh(double x) { return tanh(x); }
-#endif
-
-#if !LJ_TARGET_X86ORX64
-double lj_vm_foldarith(double x, double y, int op)
-{
- switch (op) {
- case IR_ADD - IR_ADD: return x+y; break;
- case IR_SUB - IR_ADD: return x-y; break;
- case IR_MUL - IR_ADD: return x*y; break;
- case IR_DIV - IR_ADD: return x/y; break;
- case IR_MOD - IR_ADD: return x-lj_vm_floor(x/y)*y; break;
- case IR_POW - IR_ADD: return pow(x, y); break;
- case IR_NEG - IR_ADD: return -x; break;
- case IR_ABS - IR_ADD: return fabs(x); break;
-#if LJ_HASJIT
- case IR_ATAN2 - IR_ADD: return atan2(x, y); break;
- case IR_LDEXP - IR_ADD: return ldexp(x, (int)y); break;
- case IR_MIN - IR_ADD: return x > y ? y : x; break;
- case IR_MAX - IR_ADD: return x < y ? y : x; break;
-#endif
- default: return x;
- }
-}
-#endif
-
-#if LJ_HASJIT
-
-#ifdef LUAJIT_NO_LOG2
-double lj_vm_log2(double a)
-{
- return log(a) * 1.4426950408889634074;
-}
-#endif
-
-#ifdef LUAJIT_NO_EXP2
-double lj_vm_exp2(double a)
-{
- return exp(a * 0.6931471805599453);
-}
-#endif
-
-#if !(LJ_TARGET_ARM || LJ_TARGET_PPC)
-int32_t LJ_FASTCALL lj_vm_modi(int32_t a, int32_t b)
-{
- uint32_t y, ua, ub;
- lua_assert(b != 0); /* This must be checked before using this function. */
- ua = a < 0 ? (uint32_t)-a : (uint32_t)a;
- ub = b < 0 ? (uint32_t)-b : (uint32_t)b;
- y = ua % ub;
- if (y != 0 && (a^b) < 0) y = y - ub;
- if (((int32_t)y^b) < 0) y = (uint32_t)-(int32_t)y;
- return (int32_t)y;
-}
-#endif
-
-#if !LJ_TARGET_X86ORX64
-/* Unsigned x^k. */
-static double lj_vm_powui(double x, uint32_t k)
-{
- double y;
- lua_assert(k != 0);
- for (; (k & 1) == 0; k >>= 1) x *= x;
- y = x;
- if ((k >>= 1) != 0) {
- for (;;) {
- x *= x;
- if (k == 1) break;
- if (k & 1) y *= x;
- k >>= 1;
- }
- y *= x;
- }
- return y;
-}
-
-/* Signed x^k. */
-double lj_vm_powi(double x, int32_t k)
-{
- if (k > 1)
- return lj_vm_powui(x, (uint32_t)k);
- else if (k == 1)
- return x;
- else if (k == 0)
- return 1.0;
- else
- return 1.0 / lj_vm_powui(x, (uint32_t)-k);
-}
-
-/* Computes fpm(x) for extended math functions. */
-double lj_vm_foldfpm(double x, int fpm)
-{
- switch (fpm) {
- case IRFPM_FLOOR: return lj_vm_floor(x);
- case IRFPM_CEIL: return lj_vm_ceil(x);
- case IRFPM_TRUNC: return lj_vm_trunc(x);
- case IRFPM_SQRT: return sqrt(x);
- case IRFPM_EXP: return exp(x);
- case IRFPM_EXP2: return lj_vm_exp2(x);
- case IRFPM_LOG: return log(x);
- case IRFPM_LOG2: return lj_vm_log2(x);
- case IRFPM_LOG10: return log10(x);
- case IRFPM_SIN: return sin(x);
- case IRFPM_COS: return cos(x);
- case IRFPM_TAN: return tan(x);
- default: lua_assert(0);
- }
- return 0;
-}
-#endif
-
-#if LJ_HASFFI
-int lj_vm_errno(void)
-{
- return errno;
-}
-#endif
-
-#endif