static void LJ_FASTCALL recff_math_random(jit_State *J, RecordFFData *rd)
{
GCudata *ud = udataV(&J->fn->c.upvalue[0]);
TRef tr, one;
lj_ir_kgc(J, obj2gco(ud), IRT_UDATA); /* Prevent collection. */
tr = lj_ir_call(J, IRCALL_lj_math_random_step, lj_ir_kptr(J, uddata(ud)));
one = lj_ir_knum_one(J);
tr = emitir(IRTN(IR_SUB), tr, one);
if (J->base[0]) {
TRef tr1 = lj_ir_tonum(J, J->base[0]);
if (J->base[1]) { /* d = floor(d*(r2-r1+1.0)) + r1 */
TRef tr2 = lj_ir_tonum(J, J->base[1]);
tr2 = emitir(IRTN(IR_SUB), tr2, tr1);
tr2 = emitir(IRTN(IR_ADD), tr2, one);
tr = emitir(IRTN(IR_MUL), tr, tr2);
tr = emitir(IRTN(IR_FPMATH), tr, IRFPM_FLOOR);
tr = emitir(IRTN(IR_ADD), tr, tr1);
} else { /* d = floor(d*r1) + 1.0 */
tr = emitir(IRTN(IR_MUL), tr, tr1);
tr = emitir(IRTN(IR_FPMATH), tr, IRFPM_FLOOR);
tr = emitir(IRTN(IR_ADD), tr, one);
}
}
J->base[0] = tr;
UNUSED(rd);
}
/* Record math.asin, math.acos, math.atan. */
static void LJ_FASTCALL recff_math_atrig(jit_State *J, RecordFFData *rd)
{
TRef y = lj_ir_tonum(J, J->base[0]);
TRef x = lj_ir_knum_one(J);
uint32_t ffid = rd->data;
if (ffid != FF_math_atan) {
TRef tmp = emitir(IRTN(IR_MUL), y, y);
tmp = emitir(IRTN(IR_SUB), x, tmp);
tmp = emitir(IRTN(IR_FPMATH), tmp, IRFPM_SQRT);
if (ffid == FF_math_asin) { x = tmp; } else { x = y; y = tmp; }
}
J->base[0] = emitir(IRTN(IR_ATAN2), y, x);
}
/* Record math.log. */
static void LJ_FASTCALL recff_math_log(jit_State *J, RecordFFData *rd)
{
TRef tr = lj_ir_tonum(J, J->base[0]);
if (J->base[1]) {
#ifdef LUAJIT_NO_LOG2
uint32_t fpm = IRFPM_LOG;
#else
uint32_t fpm = IRFPM_LOG2;
#endif
TRef trb = lj_ir_tonum(J, J->base[1]);
tr = emitir(IRTN(IR_FPMATH), tr, fpm);
trb = emitir(IRTN(IR_FPMATH), trb, fpm);
trb = emitir(IRTN(IR_DIV), lj_ir_knum_one(J), trb);
tr = emitir(IRTN(IR_MUL), tr, trb);
} else {
tr = emitir(IRTN(IR_FPMATH), tr, IRFPM_LOG);
}
J->base[0] = tr;
UNUSED(rd);
}
