diff options
Diffstat (limited to 'lib/LuaJIT/src/lj_vmmath.c')
-rw-r--r-- | lib/LuaJIT/src/lj_vmmath.c | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/lib/LuaJIT/src/lj_vmmath.c b/lib/LuaJIT/src/lj_vmmath.c deleted file mode 100644 index b231d3e..0000000 --- a/lib/LuaJIT/src/lj_vmmath.c +++ /dev/null @@ -1,152 +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" - -/* -- Wrapper functions --------------------------------------------------- */ - -#if LJ_TARGET_X86 && __ELF__ && __PIC__ -/* Wrapper functions to deal with the ELF/x86 PIC disaster. */ -LJ_FUNCA double lj_wrap_log(double x) { return log(x); } -LJ_FUNCA double lj_wrap_log10(double x) { return log10(x); } -LJ_FUNCA double lj_wrap_exp(double x) { return exp(x); } -LJ_FUNCA double lj_wrap_sin(double x) { return sin(x); } -LJ_FUNCA double lj_wrap_cos(double x) { return cos(x); } -LJ_FUNCA double lj_wrap_tan(double x) { return tan(x); } -LJ_FUNCA double lj_wrap_asin(double x) { return asin(x); } -LJ_FUNCA double lj_wrap_acos(double x) { return acos(x); } -LJ_FUNCA double lj_wrap_atan(double x) { return atan(x); } -LJ_FUNCA double lj_wrap_sinh(double x) { return sinh(x); } -LJ_FUNCA double lj_wrap_cosh(double x) { return cosh(x); } -LJ_FUNCA double lj_wrap_tanh(double x) { return tanh(x); } -LJ_FUNCA double lj_wrap_atan2(double x, double y) { return atan2(x, y); } -LJ_FUNCA double lj_wrap_pow(double x, double y) { return pow(x, y); } -LJ_FUNCA double lj_wrap_fmod(double x, double y) { return fmod(x, y); } -#endif - -/* -- Helper functions for generated machine code ------------------------- */ - -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; - } -} - -#if (LJ_HASJIT && !(LJ_TARGET_ARM || LJ_TARGET_ARM64 || LJ_TARGET_PPC)) || LJ_TARGET_MIPS -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_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_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); -} -#endif - -/* 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; -} - -#if LJ_HASFFI -int lj_vm_errno(void) -{ - return errno; -} -#endif - -#endif |